title: A study of the incidence of the premenstrual syndrome in a group of Nigerian women.
mesh_terms: D000293:Adolescent; D000328:Adult; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008875:Middle Aged; D009549:Nigeria; D011293:Premenstrual Syndrome / Q000453:epidemiology*