Funding for this research was provided by:
Fondo de Investigación en Salud del Instituto Mexicano del Seguro Social (FIS/IMSS/PROT/G12/1135)
Received: 30 July 2020
Accepted: 15 October 2020
First Online: 28 October 2020
Ethics approval and consent to participate
: All patients included in this work signed a written informed consent form prior to study entry. This study protocol was approved by the Research and Ethics board of the hospital. Approval reference: R-2011-1301-92. This study followed the recommendations described by the Declaration of Helsinki.
: Not applicable.
: All the authors declare that there are no conflicts of interest to disclose.