Funding for this research was provided by:
Secretaria de Educación, Ciencia, Tecnología e Innovación de la Ciudad de México (SECITI/042/2018)
Text and Data Mining valid from 2019-07-10
Received: 27 February 2019
Accepted: 1 July 2019
First Online: 10 July 2019
Ethics approval and consent to participate
: All participants volunteered for the study, were informed about the scope of the study and provided written consent. The study was approved by the Local Committee for Research and Ethics in Health Research (No. 3609) of the Regional General Hospital No. 1, of Mexico City (Registration No. R-2014-3609-14).
: Not applicable.
: The authors declare that they have no competing interests.