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.
Sara Ciocca,克里斯蒂安·德西卡,Diletta Leotta,Leigh Gill,亚历山德罗·西亚尼,安杰拉·菲诺基亚罗,Giada Benedetti,Kai Portman,Martin Francisco Montero Baez,Debora Franchi,Stefano Chiodaroli,Norbert Ortner,Leonie Renée Klein