Morey-León G, Puga-Torres T, Blum-Rojas X, González-González M, Narváez-Sarasti A, Sorroza-Rojas N. Description of the semen quality from men treated in an assisted reproduction center in Guayaquil, Ecuador. Rev Peru Med Exp Salud Publica. 2020;37(2):292-6. doi:10.17843/rpmesp.2020.372.4973