Funding for this research was provided by:
Instituto Colombiano para el Fomento de la Educacion Superior (166-2015)
Article History
Received: 8 March 2018
Accepted: 21 May 2018
First Online: 15 June 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: This study was approved by the IRB offices at Ministry of Education and Universidad de los Andes. We complied with ethical standards for collecting anonymous data and analyzing it without any personal identification.