Funding for this research was provided by:
Universidad del Norte (UN-J-2016-33455)
Departamento Administrativo de Ciencia, Tecnología e Innovación (121556933876)
Text and Data Mining valid from 2019-03-13
Received: 19 October 2018
Accepted: 4 March 2019
First Online: 13 March 2019
: The authors declare that they have no competing interests.