Funding for this research was provided by:
Received: 16 May 2019
Accepted: 19 August 2019
First Online: 30 August 2019
Ethics approval and consent to participate
: This study was approved by the Madeira Health Service – SESARAM Ethical Committee (approval number 24/2018) and all the participants gave their informed consent.
: Not applicable.
: The authors declare that they have no competing interests.