Found the following HTML validation problems:
ipums_callback.html:96:5: Warning: missing </span> before </li>


ipums_callback.html:97:5: Warning: inserting implicit <span>


ipums_callback.html:97:5: Warning: missing </span> before </li>


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ipums_callback.html:98:5: Warning: missing </span> before </li>


ipums_callback.html:99:5: Warning: inserting implicit <span>


ipums_callback.html:99:5: Warning: missing </span> before </li>


ipums_callback.html:100:5: Warning: inserting implicit <span>


ipums_callback.html:100:5: Warning: missing </span> before </li>


ipums_callback.html:105:1: Warning: inserting implicit <span>


ipums_callback.html:105:1: Warning: missing </span> before <h4>


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ipums_callback.html:115:16: Warning: inserting implicit <span>


ipums_callback.html:115:16: Warning: missing </span> before <pre>


ipums_callback.html:124:1: Warning: inserting implicit <span>


ipums_callback.html:124:1: Warning: missing </span> before <h4>


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ipums_callback.html:130:4: Warning: inserting implicit <span>


ipums_callback.html:134:1: Warning: inserting implicit <span>


ipums_callback.html:134:1: Warning: missing </span> before <h5>


ipums_callback.html:134:5: Warning: inserting implicit <span>


ipums_callback.html:136:16: Warning: inserting implicit <span>


ipums_callback.html:136:16: Warning: missing </span> before <pre>


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ipums_callback.html:143:1: Warning: inserting implicit <span>


ipums_callback.html:143:1: Warning: missing </span> before <dl>


ipums_callback.html:145:5: Warning: inserting implicit <span>


ipums_callback.html:145:31: Warning: inserting implicit <span>


ipums_callback.html:145:31: Warning: missing </span> before <p>


ipums_callback.html:145:34: Warning: inserting implicit <span>


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ipums_callback.html:160:1: Warning: inserting implicit <span>


ipums_callback.html:160:1: Warning: missing </span> before <h3>


ipums_callback.html:160:5: Warning: inserting implicit <span>


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ipums_callback.html:168:5: Warning: missing </span> before <p>


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ipums_callback.html:171:5: Warning: missing </span> before <p>


ipums_callback.html:171:9: Warning: inserting implicit <span>


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ipums_callback.html:174:5: Warning: inserting implicit <span>


ipums_callback.html:174:5: Warning: missing </span> before <p>


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ipums_callback.html:177:5: Warning: missing </span> before <p>


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ipums_callback.html:183:15: Warning: inserting implicit <span>


ipums_callback.html:183:15: Warning: missing </span> before <summary>


ipums_callback.html:183:24: Warning: inserting implicit <span>


ipums_callback.html:185:5: Warning: inserting implicit <span>


ipums_callback.html:185:5: Warning: missing </span> before </li>


ipums_callback.html:186:5: Warning: inserting implicit <span>


ipums_callback.html:186:5: Warning: missing </span> before </li>


ipums_callback.html:187:5: Warning: inserting implicit <span>


ipums_callback.html:187:5: Warning: missing </span> before </li>


ipums_callback.html:192:1: Warning: inserting implicit <span>


ipums_callback.html:192:1: Warning: missing </span> before <h4>


ipums_callback.html:196:5: Warning: inserting implicit <span>


ipums_callback.html:200:5: Warning: inserting implicit <span>


ipums_callback.html:202:16: Warning: inserting implicit <span>


ipums_callback.html:202:16: Warning: missing </span> before <pre>


ipums_callback.html:206:1: Warning: inserting implicit <span>


ipums_callback.html:206:1: Warning: missing </span> before <h4>


ipums_callback.html:210:5: Warning: inserting implicit <span>


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ipums_callback.html:216:16: Warning: inserting implicit <span>


ipums_callback.html:216:16: Warning: missing </span> before <pre>


ipums_callback.html:220:1: Warning: inserting implicit <span>


ipums_callback.html:220:1: Warning: missing </span> before <h4>


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ipums_callback.html:230:16: Warning: inserting implicit <span>


ipums_callback.html:230:16: Warning: missing </span> before <pre>


ipums_callback.html:234:1: Warning: inserting implicit <span>


ipums_callback.html:234:1: Warning: missing </span> before <h4>


ipums_callback.html:238:5: Warning: inserting implicit <span>


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ipums_callback.html:244:1: Warning: missing </span> before <h5>


ipums_callback.html:244:5: Warning: inserting implicit <span>


ipums_callback.html:246:16: Warning: inserting implicit <span>


ipums_callback.html:246:16: Warning: missing </span> before <pre>


ipums_callback.html:250:5: Warning: inserting implicit <span>


ipums_callback.html:253:1: Warning: inserting implicit <span>


ipums_callback.html:253:1: Warning: missing </span> before <dl>


ipums_callback.html:255:5: Warning: inserting implicit <span>


ipums_callback.html:255:31: Warning: inserting implicit <span>


ipums_callback.html:255:31: Warning: missing </span> before <p>


ipums_callback.html:255:34: Warning: inserting implicit <span>


ipums_callback.html:264:5: Warning: inserting implicit <span>


ipums_callback.html:266:4: Warning: inserting implicit <span>


ipums_callback.html:270:1: Warning: inserting implicit <span>


ipums_callback.html:270:1: Warning: missing </span> before <h3>


ipums_callback.html:270:5: Warning: inserting implicit <span>


ipums_callback.html:274:5: Warning: inserting implicit <span>


ipums_callback.html:278:5: Warning: inserting implicit <span>


ipums_callback.html:278:5: Warning: missing </span> before <p>


ipums_callback.html:278:9: Warning: inserting implicit <span>


ipums_callback.html:280:1: Warning: inserting implicit <span>


ipums_callback.html:281:5: Warning: inserting implicit <span>


ipums_callback.html:281:5: Warning: missing </span> before <p>


ipums_callback.html:281:9: Warning: inserting implicit <span>


ipums_callback.html:283:1: Warning: inserting implicit <span>


ipums_callback.html:284:5: Warning: inserting implicit <span>


ipums_callback.html:284:5: Warning: missing </span> before <p>


ipums_callback.html:284:9: Warning: inserting implicit <span>


ipums_callback.html:286:1: Warning: inserting implicit <span>


ipums_callback.html:287:5: Warning: inserting implicit <span>


ipums_callback.html:287:5: Warning: missing </span> before <p>


ipums_callback.html:287:9: Warning: inserting implicit <span>


ipums_callback.html:289:1: Warning: inserting implicit <span>


ipums_callback.html:290:5: Warning: inserting implicit <span>


ipums_callback.html:290:5: Warning: missing </span> before <p>


ipums_callback.html:290:9: Warning: inserting implicit <span>


ipums_callback.html:292:1: Warning: inserting implicit <span>


ipums_callback.html:296:15: Warning: inserting implicit <span>


ipums_callback.html:296:15: Warning: missing </span> before <summary>


ipums_callback.html:296:24: Warning: inserting implicit <span>


ipums_callback.html:298:5: Warning: inserting implicit <span>


ipums_callback.html:298:5: Warning: missing </span> before </li>


ipums_callback.html:299:5: Warning: inserting implicit <span>


ipums_callback.html:299:5: Warning: missing </span> before </li>


ipums_callback.html:304:1: Warning: inserting implicit <span>


ipums_callback.html:304:1: Warning: missing </span> before <h4>


ipums_callback.html:308:5: Warning: inserting implicit <span>


ipums_callback.html:312:5: Warning: inserting implicit <span>


ipums_callback.html:314:16: Warning: inserting implicit <span>


ipums_callback.html:314:16: Warning: missing </span> before <pre>


ipums_callback.html:318:1: Warning: inserting implicit <span>


ipums_callback.html:318:1: Warning: missing </span> before <h4>


ipums_callback.html:322:5: Warning: inserting implicit <span>


ipums_callback.html:326:5: Warning: inserting implicit <span>


ipums_callback.html:328:16: Warning: inserting implicit <span>


ipums_callback.html:328:16: Warning: missing </span> before <pre>


ipums_callback.html:332:1: Warning: inserting implicit <span>


ipums_callback.html:332:1: Warning: missing </span> before <h4>


ipums_callback.html:336:5: Warning: inserting implicit <span>


ipums_callback.html:340:5: Warning: inserting implicit <span>


ipums_callback.html:342:16: Warning: inserting implicit <span>


ipums_callback.html:342:16: Warning: missing </span> before <pre>


ipums_callback.html:346:1: Warning: inserting implicit <span>


ipums_callback.html:346:1: Warning: missing </span> before <h4>


ipums_callback.html:350:5: Warning: inserting implicit <span>


ipums_callback.html:354:5: Warning: inserting implicit <span>


ipums_callback.html:356:16: Warning: inserting implicit <span>


ipums_callback.html:356:16: Warning: missing </span> before <pre>


ipums_callback.html:360:1: Warning: inserting implicit <span>


ipums_callback.html:360:1: Warning: missing </span> before <h4>


ipums_callback.html:364:5: Warning: inserting implicit <span>


ipums_callback.html:366:4: Warning: inserting implicit <span>


ipums_callback.html:370:1: Warning: inserting implicit <span>


ipums_callback.html:370:1: Warning: missing </span> before <h5>


ipums_callback.html:370:5: Warning: inserting implicit <span>


ipums_callback.html:372:16: Warning: inserting implicit <span>


ipums_callback.html:372:16: Warning: missing </span> before <pre>


ipums_callback.html:376:5: Warning: inserting implicit <span>


ipums_callback.html:379:1: Warning: inserting implicit <span>


ipums_callback.html:379:1: Warning: missing </span> before <dl>


ipums_callback.html:381:5: Warning: inserting implicit <span>


ipums_callback.html:381:31: Warning: inserting implicit <span>


ipums_callback.html:381:31: Warning: missing </span> before <p>


ipums_callback.html:381:34: Warning: inserting implicit <span>


ipums_callback.html:390:5: Warning: inserting implicit <span>


ipums_callback.html:392:4: Warning: inserting implicit <span>


ipums_callback.html:396:1: Warning: inserting implicit <span>


ipums_callback.html:396:1: Warning: missing </span> before <h3>


ipums_callback.html:396:5: Warning: inserting implicit <span>


ipums_callback.html:400:5: Warning: inserting implicit <span>


ipums_callback.html:404:5: Warning: inserting implicit <span>


ipums_callback.html:404:5: Warning: missing </span> before <p>


ipums_callback.html:404:9: Warning: inserting implicit <span>


ipums_callback.html:406:1: Warning: inserting implicit <span>


ipums_callback.html:407:5: Warning: inserting implicit <span>


ipums_callback.html:407:5: Warning: missing </span> before <p>


ipums_callback.html:407:9: Warning: inserting implicit <span>


ipums_callback.html:409:1: Warning: inserting implicit <span>


ipums_callback.html:410:5: Warning: inserting implicit <span>


ipums_callback.html:410:5: Warning: missing </span> before <p>


ipums_callback.html:410:9: Warning: inserting implicit <span>


ipums_callback.html:412:1: Warning: inserting implicit <span>


ipums_callback.html:413:5: Warning: inserting implicit <span>


ipums_callback.html:413:5: Warning: missing </span> before <p>


ipums_callback.html:413:9: Warning: inserting implicit <span>


ipums_callback.html:415:1: Warning: inserting implicit <span>


ipums_callback.html:416:5: Warning: inserting implicit <span>


ipums_callback.html:416:5: Warning: missing </span> before <p>


ipums_callback.html:416:9: Warning: inserting implicit <span>


ipums_callback.html:418:1: Warning: inserting implicit <span>


ipums_callback.html:422:15: Warning: inserting implicit <span>


ipums_callback.html:422:15: Warning: missing </span> before <summary>


ipums_callback.html:422:24: Warning: inserting implicit <span>


ipums_callback.html:424:5: Warning: inserting implicit <span>


ipums_callback.html:424:5: Warning: missing </span> before </li>


ipums_callback.html:425:5: Warning: inserting implicit <span>


ipums_callback.html:425:5: Warning: missing </span> before </li>


ipums_callback.html:430:1: Warning: inserting implicit <span>


ipums_callback.html:430:1: Warning: missing </span> before <h4>


ipums_callback.html:434:5: Warning: inserting implicit <span>


ipums_callback.html:438:5: Warning: inserting implicit <span>


ipums_callback.html:440:16: Warning: inserting implicit <span>


ipums_callback.html:440:16: Warning: missing </span> before <pre>


ipums_callback.html:444:1: Warning: inserting implicit <span>


ipums_callback.html:444:1: Warning: missing </span> before <h4>


ipums_callback.html:448:5: Warning: inserting implicit <span>


ipums_callback.html:452:5: Warning: inserting implicit <span>


ipums_callback.html:454:16: Warning: inserting implicit <span>


ipums_callback.html:454:16: Warning: missing </span> before <pre>


ipums_callback.html:458:1: Warning: inserting implicit <span>


ipums_callback.html:458:1: Warning: missing </span> before <h4>


ipums_callback.html:462:5: Warning: inserting implicit <span>


ipums_callback.html:466:5: Warning: inserting implicit <span>


ipums_callback.html:468:16: Warning: inserting implicit <span>


ipums_callback.html:468:16: Warning: missing </span> before <pre>


ipums_callback.html:472:1: Warning: inserting implicit <span>


ipums_callback.html:472:1: Warning: missing </span> before <h4>


ipums_callback.html:476:5: Warning: inserting implicit <span>


ipums_callback.html:480:5: Warning: inserting implicit <span>


ipums_callback.html:482:16: Warning: inserting implicit <span>


ipums_callback.html:482:16: Warning: missing </span> before <pre>


ipums_callback.html:486:1: Warning: inserting implicit <span>


ipums_callback.html:486:1: Warning: missing </span> before <h4>


ipums_callback.html:490:5: Warning: inserting implicit <span>


ipums_callback.html:492:4: Warning: inserting implicit <span>


ipums_callback.html:496:1: Warning: inserting implicit <span>


ipums_callback.html:496:1: Warning: missing </span> before <h5>


ipums_callback.html:496:5: Warning: inserting implicit <span>


ipums_callback.html:498:16: Warning: inserting implicit <span>


ipums_callback.html:498:16: Warning: missing </span> before <pre>


ipums_callback.html:502:5: Warning: inserting implicit <span>


ipums_callback.html:505:1: Warning: inserting implicit <span>


ipums_callback.html:505:1: Warning: missing </span> before <dl>


ipums_callback.html:507:5: Warning: inserting implicit <span>


ipums_callback.html:507:31: Warning: inserting implicit <span>


ipums_callback.html:507:31: Warning: missing </span> before <p>


ipums_callback.html:507:34: Warning: inserting implicit <span>


ipums_callback.html:516:5: Warning: inserting implicit <span>


ipums_callback.html:518:4: Warning: inserting implicit <span>


ipums_callback.html:522:1: Warning: inserting implicit <span>


ipums_callback.html:522:1: Warning: missing </span> before <h3>


ipums_callback.html:522:5: Warning: inserting implicit <span>


ipums_callback.html:526:5: Warning: inserting implicit <span>


ipums_callback.html:530:5: Warning: inserting implicit <span>


ipums_callback.html:530:5: Warning: missing </span> before <p>


ipums_callback.html:530:9: Warning: inserting implicit <span>


ipums_callback.html:532:1: Warning: inserting implicit <span>


ipums_callback.html:533:5: Warning: inserting implicit <span>


ipums_callback.html:533:5: Warning: missing </span> before <p>


ipums_callback.html:533:9: Warning: inserting implicit <span>


ipums_callback.html:535:1: Warning: inserting implicit <span>


ipums_callback.html:536:5: Warning: inserting implicit <span>


ipums_callback.html:536:5: Warning: missing </span> before <p>


ipums_callback.html:536:9: Warning: inserting implicit <span>


ipums_callback.html:538:1: Warning: inserting implicit <span>


ipums_callback.html:539:5: Warning: inserting implicit <span>


ipums_callback.html:539:5: Warning: missing </span> before <p>


ipums_callback.html:539:9: Warning: inserting implicit <span>


ipums_callback.html:541:1: Warning: inserting implicit <span>


ipums_callback.html:545:15: Warning: inserting implicit <span>


ipums_callback.html:545:15: Warning: missing </span> before <summary>


ipums_callback.html:545:24: Warning: inserting implicit <span>


ipums_callback.html:547:5: Warning: inserting implicit <span>


ipums_callback.html:547:5: Warning: missing </span> before </li>


ipums_callback.html:548:5: Warning: inserting implicit <span>


ipums_callback.html:548:5: Warning: missing </span> before </li>


ipums_callback.html:549:5: Warning: inserting implicit <span>


ipums_callback.html:549:5: Warning: missing </span> before </li>


ipums_callback.html:554:1: Warning: inserting implicit <span>


ipums_callback.html:554:1: Warning: missing </span> before <h4>


ipums_callback.html:558:5: Warning: inserting implicit <span>


ipums_callback.html:562:5: Warning: inserting implicit <span>


ipums_callback.html:564:16: Warning: inserting implicit <span>


ipums_callback.html:564:16: Warning: missing </span> before <pre>


ipums_callback.html:568:1: Warning: inserting implicit <span>


ipums_callback.html:568:1: Warning: missing </span> before <h4>


ipums_callback.html:572:5: Warning: inserting implicit <span>


ipums_callback.html:576:5: Warning: inserting implicit <span>


ipums_callback.html:578:16: Warning: inserting implicit <span>


ipums_callback.html:578:16: Warning: missing </span> before <pre>


ipums_callback.html:582:1: Warning: inserting implicit <span>


ipums_callback.html:582:1: Warning: missing </span> before <h4>


ipums_callback.html:586:5: Warning: inserting implicit <span>


ipums_callback.html:590:5: Warning: inserting implicit <span>


ipums_callback.html:592:16: Warning: inserting implicit <span>


ipums_callback.html:592:16: Warning: missing </span> before <pre>


ipums_callback.html:596:1: Warning: inserting implicit <span>


ipums_callback.html:596:1: Warning: missing </span> before <h4>


ipums_callback.html:600:5: Warning: inserting implicit <span>


ipums_callback.html:602:4: Warning: inserting implicit <span>


ipums_callback.html:606:1: Warning: inserting implicit <span>


ipums_callback.html:606:1: Warning: missing </span> before <h5>


ipums_callback.html:606:5: Warning: inserting implicit <span>


ipums_callback.html:608:16: Warning: inserting implicit <span>


ipums_callback.html:608:16: Warning: missing </span> before <pre>


ipums_callback.html:612:5: Warning: inserting implicit <span>


ipums_callback.html:615:1: Warning: inserting implicit <span>


ipums_callback.html:615:1: Warning: missing </span> before <dl>


ipums_callback.html:617:5: Warning: inserting implicit <span>


ipums_callback.html:617:31: Warning: inserting implicit <span>


ipums_callback.html:617:31: Warning: missing </span> before <p>


ipums_callback.html:617:34: Warning: inserting implicit <span>


read_ipums_micro_yield.html:158:5: Warning: missing </span> before </li>


read_ipums_micro_yield.html:159:5: Warning: inserting implicit <span>


read_ipums_micro_yield.html:159:5: Warning: missing </span> before </li>


read_ipums_micro_yield.html:164:1: Warning: inserting implicit <span>


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read_ipums_micro_yield.html:174:16: Warning: missing </span> before <pre>


read_ipums_micro_yield.html:185:1: Warning: inserting implicit <span>


read_ipums_micro_yield.html:185:1: Warning: missing </span> before <h4>


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read_ipums_micro_yield.html:195:16: Warning: missing </span> before <pre>


read_ipums_micro_yield.html:200:5: Warning: inserting implicit <span>


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read_ipums_micro_yield.html:206:1: Warning: missing </span> before <h3>


read_ipums_micro_yield.html:206:5: Warning: inserting implicit <span>


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read_ipums_micro_yield.html:214:5: Warning: missing </span> before <p>


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read_ipums_micro_yield.html:216:1: Warning: inserting implicit <span>


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read_ipums_micro_yield.html:217:5: Warning: missing </span> before <p>


read_ipums_micro_yield.html:217:9: Warning: inserting implicit <span>


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read_ipums_micro_yield.html:223:15: Warning: inserting implicit <span>


read_ipums_micro_yield.html:223:15: Warning: missing </span> before <summary>


read_ipums_micro_yield.html:223:24: Warning: inserting implicit <span>


read_ipums_micro_yield.html:225:5: Warning: inserting implicit <span>


read_ipums_micro_yield.html:225:5: Warning: missing </span> before </li>


read_ipums_micro_yield.html:226:5: Warning: inserting implicit <span>


read_ipums_micro_yield.html:226:5: Warning: missing </span> before </li>


read_ipums_micro_yield.html:231:1: Warning: inserting implicit <span>


read_ipums_micro_yield.html:231:1: Warning: missing </span> before <h4>


read_ipums_micro_yield.html:235:5: Warning: inserting implicit <span>


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read_ipums_micro_yield.html:241:16: Warning: inserting implicit <span>


read_ipums_micro_yield.html:241:16: Warning: missing </span> before <pre>


read_ipums_micro_yield.html:252:1: Warning: inserting implicit <span>


read_ipums_micro_yield.html:252:1: Warning: missing </span> before <h4>


read_ipums_micro_yield.html:256:5: Warning: inserting implicit <span>


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read_ipums_micro_yield.html:262:16: Warning: missing </span> before <pre>


read_ipums_micro_yield.html:267:5: Warning: inserting implicit <span>


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read_ipums_micro_yield.html:280:1: Warning: missing </span> before <h3>


read_ipums_micro_yield.html:280:5: Warning: inserting implicit <span>