Funding for this research was provided by:
Universidad de Tarapacá (Proyecto Mayor de Investigación Científica y Tecnológica UTA n°3732-16.)
Text and Data Mining valid from 2019-11-27
Received: 29 October 2018
Accepted: 24 October 2019
First Online: 27 November 2019
Ethics approval and consent to participate
: Before the start of the study, written informed consent was requested and received from the patient and her/his primary caregiver. The objectives of the study were explained as well as the voluntary nature of participation. No compensation was offered for participating in the study. The study was approved by the Ethics Committee of the University of Tarapacá and the National Health Service of Chile.
: Not applicable.
: The authors declare that they have no competing interest.