EZENYEAKU, C. C.; EZEBIALU, I. U.; UMEOBIKA, J. C.; AKABIKE, J.; EZENYEAKU, C. A.; OJIYI, C. E.; OKEKE, T. C. Assessment of age at menarche and menstrual pattern among secondary school girls in Awka, Southeast Nigeria. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 10, n. 6, p. 2192–2197, 2021. DOI: 10.18203/2320-1770.ijrcog20212146. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/10223. Acesso em: 4 dec. 2025.