{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,13]],"date-time":"2026-05-13T19:04:46Z","timestamp":1778699086176,"version":"3.51.4"},"reference-count":32,"publisher":"BMJ","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Med Genet"],"published-print":{"date-parts":[[1975,3]]},"abstract":"<jats:p>A population survey in northern Liberia showed an average incidence of 9 percent of beta-thalassaemia trait. There was considerable tribal variation, the highest rates being mainly found in tribes having a low incidence of Hb S. A single example of deltabeta-thalassaemia trait was also found; the incidence of delta-chain variants was 1.8 percent. The effect of malaria on Hb A2 levels was investigated but appeared to be negligible. The problems of beta-thalassaemia and Hb S occurring in the same population are discussed. It is considered that, although made on a local sample, the results of this survey indicate a high incidence of beta-thalassaemia trait elsewhere in Liberia and that this is a suitable are for investigations of linkage at beta- and delta-chain loci. No conclusion is at present possible from the data on the presence of alpha-thalassaemia although 10 percent of neonates were found to have increased levels of Hb Barts.<\/jats:p>","DOI":"10.1136\/jmg.12.1.55","type":"journal-article","created":{"date-parts":[[2008,11,10]],"date-time":"2008-11-10T14:50:51Z","timestamp":1226328651000},"page":"55-63","source":"Crossref","is-referenced-by-count":19,"title":["Thalassaemia in northern Liberia. A survey in the Mount Nimba area."],"prefix":"10.1136","volume":"12","author":[{"given":"M C","family":"Willcox","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[1975,3,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"929","DOI":"10.1136\/bmj.1.5076.929","article-title":"Observations on some 'fast' haemoglobins","volume":"1","author":"Ager, J.A.M.; Lehmann, H.","year":"1958","unstructured":"Ager, J. A. M. and Lehmann, H. (1958). Observations on some 'fast' haemoglobins: K, J, N, and 'Bart's'. British Medical Journal, 1, 929-931.","journal-title":"British Medical Journal; Bart's"},{"key":"ref_2","series-title":"Population genetics of abnormal human haemoglobins. In Proceedings of the First International Congress of Human Genetics","first-page":"430","author":"Allison, A.C.","year":"1957","unstructured":"Allison, A. C. (1957). 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