- Correspondence to Dr Yeimer Ortiz-Martinez, Faculty of Health Sciences, University of Sucre, Sincelejo, Sucre, Colombia 132512; ,
- Received 19 March 2017
- Accepted 27 March 2017
- Published online 13 April 2017.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.