Funding for this research was provided by:
Consejo Nacional de Ciencia y Tecnología (S0008-2015-2 - 261229)
Text and Data Mining valid from 2018-05-10
Received: 15 November 2017
Accepted: 30 April 2018
First Online: 10 May 2018
Ethics approval and consent to participate
: This study was submitted for review and approved by the ethics committee of the National Institute of Public Health of Mexico (July 22, 2015, CI: 1306, No. 1712). For indicators measured with surveys to mothers or health professionals, verbal consent was obtained from participants. All informed consents were evaluated and approved by the National Institute of Public Health of Mexico ethics committee.
: The authors declare that they have no competing interests.
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