Zitko, Pedro
Bilbeny, Norberto
Balmaceda, Carlos
Abbott, Tomas
Carcamo, Cesar
Espinoza, Manuel http://orcid.org/0000-0001-9564-9512
Funding for this research was provided by:
Asociación Chilena para el Estudio del Dolor
Article History
Received: 1 September 2020
Accepted: 3 May 2021
First Online: 17 May 2021
Declarations
:
: This study was presented to the ethical committee of Pontificia Universidad Católica de Chile and received a dispensation notification.
: Not applicable.
: We are aware that ACHED received an unrestricted research grant from Grunenthal Pharmaceuticals, though none of the authors received direct payments from Grunenthal for this study.