Funding for this research was provided by:
Unversidad del Rosario (FIUR DN-BG001)
Universidad de Boyaca (N° RECT 60)
Received: 27 December 2017
Accepted: 12 April 2018
First Online: 19 April 2018
Ethics approval and consent to participate
: Written informed consent was obtained from all participants. This study was conducted according to the guidelines laid down in the Declaration of Helsinki (2000) and was approved by the regional Ethics Committee for Medical Research Ethics Committee of The Universidad Manuela Beltrán (UMB Code N° 01–1802-2013).
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.