Received: 17 February 2021
Accepted: 12 May 2021
First Online: 26 May 2021
: All participants provided written informed consent before enrollment. The study was approved by the institutional review board: <i>Comité Ético Científico, Facultad de Medicina Clínica Alemana, Universidad del Desarrollo</i>, Santiago, Chile (IRB number 2020–34). All study methods were performed in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.