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 st...详情 >
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 st...详情 >