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.
Alexandra Jiménez
Alina
Paco León
Fran
Elisa Mouliaá
Gloria
Karra Elejalde
Ginecólogo
Ingrid García Jonsson
Chica 25 Fiesta
Ernesto Sevilla