Grace H J, Fismer K D
S Afr Med J. 1975 Aug 30;49(37):1519-20.
Poly-X syndromes are very uncommon in Indian and Black South Africans. Two affected males of each race group are described; the Indians are probably the first to be reported in this country, and there are now 8 case histories of Klinefelter's syndrome in Blacks. The possible reasons for the rarity of the poly-X syndromes in South Africa are discussed and it is suggested that these syndromes are less common here than in other countries.
多X综合征在印度人和南非黑人中非常罕见。本文描述了每个种族群体中的两名患病男性；印度人可能是该国首例报告病例，目前黑人中有8例克兰费尔特综合征的病史。文中讨论了南非多X综合征罕见的可能原因，并指出这些综合征在南非比在其他国家更为少见。
