Funding for this research was provided by:
Consejo Nacional de Ciencia y Tecnología (000 000 000273175)
Received: 8 October 2019
Revised: 1 January 2020
Accepted: 6 January 2020
First Online: 1 February 2020
Compliance with ethical standards
: The Ethics Committee from the Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán reviewed and approved the protocol for this genetic study.