title: Epidemiologic aspects of gestational trophoblastic diseases in Ibadan, Nigeria.
mesh_terms: D000017:ABO Blood-Group System; D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008423:Maternal Age; D008875:Middle Aged; D009549:Nigeria; D010298:Parity; D011247:Pregnancy; D012621:Seasons; D014328:Trophoblastic Neoplasms / Q000453:epidemiology*; D014594:Uterine Neoplasms / Q000453:epidemiology*
chemical_list: D000017:ABO Blood-Group System