title: Reply.
authors.affiliation: Catholic University Leuven, Leuven Institute for Fertility and Embryology, Leuven, Belgium B3001. Electronic address: ivo.brosens@med.kuleuven.be.
authors.forename: Ivo
authors.initials: I
authors.lastname: Brosens
authors.affiliation: Department of Gynecology, Obstetrics, and Urology, Sapienza University, Rome, Italy I00100.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Benagiano
mesh_terms: D000858:Anovulation / Q000188:drug therapy*; D004717:Endometrium / Q000002:abnormalities*; D005260:Female; D005300:Fertility Agents, Female / Q000627:therapeutic use*; D006801:Humans; D007247:Infertility, Female / Q000188:drug therapy*; D008598:Menstruation; D011085:Polycystic Ovary Syndrome / Q000188:drug therapy*; D011247:Pregnancy; D011248:Pregnancy Complications / Q000517:prevention & control*; D011372:Progestins / Q000627:therapeutic use*; D014591:Uterine Diseases / Q000188:drug therapy*
chemical_list: D005300:Fertility Agents, Female; D011372:Progestins