title: An adjustment of a selection bias in postpartum amenorrhea from follow-up studies.
authors.forename: S N
authors.initials: SN
authors.lastname: Singh
authors.forename: B N
authors.initials: BN
authors.lastname: Bhattacharya
authors.forename: R C
authors.initials: RC
authors.lastname: Yadava
mesh_terms: D000568:Amenorrhea; D001208:Asia; D003906:Developing Countries; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007194:India; D049590:Postpartum Period; D015983:Selection Bias
keywords: Asia; Developing Countries; India; Southern Asia