简介： It seems simple: an egg + sperm = one embryo. But if your sperm is "few, vague and abnormal" and your woman is premenopausal at age 37, things start to get complicated.
It seems simple: an egg + sperm = one embryo. But if your sperm is "few, vague and abnormal" and your woman is premenopausal at age 37, things start to get complicated.
丹尼斯·克里斯托弗,丹尼斯·奎德,丹尼尔·斯特恩,杰基·厄尔·哈利,芭芭拉·蓓丽,保罗·杜利,Robyn Douglass,哈特·巴克纳,艾米·莱特,Peter Maloney,约翰·阿什顿,Lisa Shure,Jennifer K. Mickel,P·J·索尔丝,David K. Blase,Tom Ohmer