Received: 17 January 2021
Accepted: 22 April 2021
First Online: 7 June 2021
: This study was approved by the Ethics Committee of University of Malaga (Spain) (No 95–2015-H) and University of Concepcion (Chile) (E-448-2019). Written informed consent was obtained from all participants. Methods in the study were performed in accordance with the relevant guidelines and regulations.
: All authors declare no competing interests.