Stevenson A C, Davison B C, Say B, Ustuoplu S, Liya D, Abul-Einen M, Toppozada H K
Lancet. 1971 Dec 11;2(7737):1286-9. doi: 10.1016/s0140-6736(71)90604-0.
Data are presented on an association between toxaemia of pregnancy and consanguinity of patients, seen at a Turkish hospital, and their husbands. Women with toxaemia were less frequently related to their husbands than those with no signs of pre-eclampsia. The relationship between toxaemia in twin pregnancies and the sexes of the twin pairs from four sources are examined. In all four pre-eclampsia seems to be more common in unlike-sex than in like-sex twin pregnancies, and, by extension, to be more common in dizygous than in monozygous twin pregnancies.
