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Africans have the highest twin birth rates among all human populations, and Nigeria is the most populous country in Africa. Due to its combination of large population and high twin birth rates, Nigeria has one of the largest twin populations in the world. In this article, we provide current updates on the NTSR samples recruited, recruitment procedures, zygosity assessment and findings emerging from the NTSR.<\/jats:p>","DOI":"10.1017\/thg.2019.110","type":"journal-article","created":{"date-parts":[[2019,12,3]],"date-time":"2019-12-03T11:42:24Z","timestamp":1575373344000},"page":"637-640","source":"Crossref","is-referenced-by-count":9,"title":["The Nigerian Twin and Sibling Registry: An Update"],"prefix":"10.1017","volume":"22","author":[{"given":"Yoon-Mi","family":"Hur","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hoe-Uk","family":"Jeong","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Man Chull","family":"Kang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Frances","family":"Ajose","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jong Woo","family":"Kim","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jeffrey J.","family":"Beck","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jouke-Jan","family":"Hottenga","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hamdi","family":"Mbarek","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Casey T.","family":"Finnicum","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Erik A.","family":"Ehli","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nicholas G.","family":"Martin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eco J.","family":"de Geus","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dorret I.","family":"Boomsma","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gareth E.","family":"Davies","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Timothy","family":"Bates","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2019,12,3]]},"reference":[{"key":"S1832427419001105_ref11","doi-asserted-by":"publisher","DOI":"10.1375\/twin.8.1.76"},{"key":"S1832427419001105_ref14","doi-asserted-by":"publisher","DOI":"10.1017\/thg.2017.15"},{"key":"S1832427419001105_ref21","doi-asserted-by":"publisher","DOI":"10.1017\/S0021932000007896"},{"key":"S1832427419001105_ref31","unstructured":"World Bank. 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