title: Characteristics of fertile menstrual cycles.
authors.affiliation: National Institute of Environmental Health Sciences, Epidemiology Branch A3-05, Research Triangle Park, North Carolina 27790, USA. BAIRD@NIEH.NIH GOV
authors.forename: D D
authors.initials: DD
authors.lastname: Baird
mesh_terms: D006063:Chorionic Gonadotropin / Q000652:urine; D004967:Estrogens / Q000652:urine; D005260:Female; D005298:Fertility / Q000502:physiology*; D006801:Humans; D007986:Luteinizing Hormone / Q000652:urine; D008597:Menstrual Cycle / Q000652:urine*; D011247:Pregnancy; D011374:Progesterone / Q000652:urine
chemical_list: D006063:Chorionic Gonadotropin; D004967:Estrogens; D011374:Progesterone; D007986:Luteinizing Hormone