The Twinning Incidence in Nigeria
Tóm tắt
The dizygotic twinning rate in Western Nigeria is the highest on record (45—50 per mil maternities). It is suggested that, rather than to peculiarities in the population structure or to genetic factors, such a high incidence might be due to the presence in the diet of estrogen-like substances.
Từ khóa
Tài liệu tham khảo
Nylander, 1978, Causes of high twinning frequencies in Nigeria, Prog Clin Biol Res, 24, 35
Nylander PPS (1976): Biosocial and clinical studies in twinning in an African and a Caucasian population, M.D. Thesis, University of Aberdeen.
MacGillivray, 1975, Human Multiple Pregnancy
Hardman, 1969, Pharmaceutical products from plant steroids, Trop Sci, 11, 196