J. H. Fouedjio, F. Y. Fouelifack, J. T. Fouogue, L. Etame, L. D. Fouelifa, and R. E. Mbu, “Dysmenorrhea among students in Yaounde, Cameroon: associated factors and socio-cultural aspects”, Int J Reprod Contracept Obstet Gynecol, vol. 8, no. 8, pp. 3339–3343, Jul. 2019.