Funding for this research was provided by:
Consejo Nacional de Ciencia y Tecnología (FONSEC CONACYT SSA/IMSS/ISSSTE 2014-1-233538)
Received: 29 June 2018
Accepted: 1 November 2018
First Online: 19 November 2018
Ethics approval and consent to participate
: This study will be conducted in accordance to the principles expressed in the Declaration of Helsinki. It was approved by the Research (Project 1287, December 15, 2014), Ethics in Research (CI: 1287, No. 1602), and Biosecurity Committees at the Instituto Nacional de Salud Pública (CI: 1287, CB: 1278). Written informed consent will be obtained from all participants.
: Not applicable. This manuscript does not contain data from any individual person.
: The authors declare that they have no competing interests.
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