Van Dijk Marieke G, García-Rojas Mónica, Contreras Xipatl, Krumholz Abigail, García Sandra G, Díaz-Olavarrieta Claudia
Mexico Office, Population Council, Westerbork, Netherlan.
Ministry of Health of Oaxaca, Oaxaca, Mexico.
Salud Publica Mex. 2014 Sep-Oct;56(5):426-7.