Funding for this research was provided by:
FONDECYT Chile (1170043)
Text and Data Mining valid from 2020-01-23
Received: 20 August 2019
Accepted: 10 January 2020
First Online: 23 January 2020
Ethics approval and consent to participate
: The study was approved by institutional review boards at each of the 28 study sites. Informed consent was obtained from patients or legally authorized surrogates.The first and main institutional review board was Comité Ético-Científico, Facultad de Medicina, Pontificia Universidad Católica de Chile, March 2017, ID 161012007.
: Not applicable
: The authors declare that they have no competing interests.