Received: 10 January 2019
Accepted: 23 June 2019
First Online: 28 June 2019
Ethics approval and consent to participate
: The study protocol was approved by the Ethical Committee at Vall d’Hebron University Hospital, Barcelona, Spain (PR-IR125/2017). Before enrollment, all participants received a brief explanation of the aims, risks and benefits of the study and were informed that they could terminate the interviews at any time. The local Institutional Review Board approved the form of consent indicated by completing the survey. All participants gave their informed consent forms prior to enrollment. The work was carried out in accordance with the Code of Ethics of the World Medical Association for experimental studies involving humans.
: Not applicable.
: The authors declare that they have no competing interests.