Age at Menarche, Schooling, and Sexual Debut in Northern Malawi Glynn, Judith R. ; Kayuni, Ndoliwe ; Floyd, Sian ; Banda, Emmanuel ; Francis-Chizororo, Monica ; Tanton, Clare ; Molesworth, Anna ; Hemmings, Joanne ; Crampin, Amelia C. ; French, Neil Abstract Publication: PLoS ONE Pub Date: December 2010 DOI: 10.1371/journal.pone.0015334 Bibcode: 2010PLoSO...515334G