Received: 16 December 2019
Accepted: 13 August 2020
First Online: 20 August 2020
Ethics approval and consent to participate
: This study was approved by the Research Ethics Committee of the Regional Health Administration of Lisbon and Tagus Valley, IP (Portugal) (Approval numbers: Process 3525/CES/2018 and 8696/CES/2018). Written informed consent was obtained from all individual participants included in the study.
: Not applicable.
: The authors declare that they have no conflict of interests.