ARYAL, T. R. Estimation of the Duration of Post-partum Amenorrhea among Nepalese Mothers: Some Indirect Techniques. Nepal Journal of Science and Technology, [S. l.], v. 10, p. 213–218, 2010. DOI: 10.3126/njst.v10i0.2963. Disponível em: https://nepjol.info/index.php/NJST/article/view/2963. Acesso em: 23 jul. 2024.