Funding for this research was provided by:
Universidad Juárez del Estado de Durango (No number)
Text and Data Mining valid from 2019-09-18
Received: 23 May 2019
Accepted: 10 September 2019
First Online: 18 September 2019
Ethics approval and consent to participate
: The Ethics Committee of the Institute of Security and Social Services for the State Workers approved this project. Participants were informed about the aims and procedures of the study, and a written informed consent from each participant was obtained.
: The authors declare that they have no competing interests.