Funding for this research was provided by:
Consejo Nacional de Ciencia y Tecnología (202545/2013)
Received: 12 June 2019
Accepted: 13 January 2020
First Online: 22 January 2020
Ethics approval and consent to participate
: The study protocol was approved by the Research Council at The University of Guanajuato and was retrospectively recorded in the National Clinical Trials Registry on December 15, 2015 (NTC026365646). A written informed consent was signed by all participants.
: Not applicable.
: The authors declare that they have no competing interests.