Funding for this research was provided by:
Received: 19 November 2018
Accepted: 4 March 2020
First Online: 13 March 2020
Ethics approval and consent to participate
: Consent to participate is not applicable since anonymized patient-level data was used in the study. The utilization of the data was approved both from Central Administration of the Health System (Administração Central do Sistema de Saúde- ACSS), I.P. and the Escola Nacional de Saúde Pública, Universidade NOVA de Lisboa.
: Not applicable.
: The authors declare that they have no competing interests.