Amelar R D, Dubin L
Urology. 1975 Feb;5(2):228-32. doi: 10.1016/0090-4295(75)90016-3.
In selected cases of subfertile men, the first portion of the split ejaculate is superior to the specimen considered as a whole with regard to sperm density, motility, and cytology, and also in those cases in which there is increased seminal viscosity in the whole ejaculate. Use of the coital technique in which the husband withdraws his penis from the vagina after deposition of the better first portion of the ejaculate during the fertile time of the wife's cycle has resulted in rapidly achieving pregnancy in many instances in which the marriages had been barren for years. A total of 33 cases of pregnancy ascribed to this coital technique in the past four years, with detailed analyses of whole and split ejaculates, is presented.
在部分不育男性病例中，分段射精的第一部分在精子密度、活力和细胞学方面优于整个标本，在整个射精精液粘度增加的病例中也是如此。采用这样一种性交技术：在妻子月经周期的排卵期，当射精的较好的第一部分射出后，丈夫将阴茎从阴道抽出，在许多多年不育的婚姻中，这种方法已使她们迅速怀孕。本文介绍了过去四年中归因于这种性交技术的33例妊娠病例，并对整个射精标本和分段射精标本进行了详细分析。
