Article History
Received: 21 October 2020
Accepted: 5 May 2021
First Online: 26 May 2021
Declarations
:
: Obtaining informed consent or approval by an ethics board was not required under national regulations since anonymized patient-level data was used in the study.The utilization of the data was approved both from Administração Central do Sistema de Saúde (ACSS), I.P. and the Escola Nacional de Saúde Pública, Universidade NOVA de Lisboa.
: Not applicable.
: The authors have declared that no competing interests exist.