Funding for this research was provided by:
Ministerio de Economía y Competitividad (MAT2015-71045-P)
Vicerrectoría de Investigación, Universidad de Costa Rica (115-B4-608)
Article History
Received: 10 May 2018
Accepted: 13 October 2018
First Online: 23 October 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.