Enlace original:
https://repositorio.uc.cl/handle/11534/20048
Aravena, R.
,
Croxatto A., Horacio.
,
Díaz Fernández, María Soledad.
,
[Contraceptive Efficacy of Lactational Amenorrhea in Urban Chilean Women]
,
Contraceptive Efficacy of Lactational Amenorrhea in Urban Chilean Women