title: Assisted reproductive technology and superfetation: a case report.
abstract: This observation reports a case of human superfetation. Fertilizable oocytes and embryos were obtained after ovarian stimulation in a women already several weeks pregnant. Spontaneous monofetal pregnancy had normal development and the embryos obtained after in vitro fertilization were actually frozen.
authors.affiliation: Department of Obstetrics and Gynecology, Hôpital la Pitie, Paris, France.
authors.forename: G
authors.initials: G
authors.lastname: Lefebvre
authors.forename: D
authors.initials: D
authors.lastname: Vauthier
authors.forename: J
authors.initials: J
authors.lastname: Gonzales
authors.forename: S
authors.initials: S
authors.lastname: Lesourd
mesh_terms: D000328:Adult; D005260:Female; D005640:Follicle Stimulating Hormone / Q000627:therapeutic use; D015181:Gamete Intrafallopian Transfer / Q000009:adverse effects*; D007987:Gonadotropin-Releasing Hormone / Q000627:therapeutic use; D006801:Humans; D008596:Menotropins / Q000627:therapeutic use; D010062:Ovulation Induction / Q000009:adverse effects; D011247:Pregnancy; D013476:Superfetation
chemical_list: D007987:Gonadotropin-Releasing Hormone; D008596:Menotropins; D005640:Follicle Stimulating Hormone