Received: 13 November 2019
Accepted: 10 December 2019
First Online: 27 December 2019
Ethics approval and consent to participate
: Written informed consent was obtained from all participants with the questionnaire. The study protocol complies with the Declaration of Helsinki for medical studies and has been approved by the Bioethical Committee of Córdoba University and registered in the platform ExternalRef removed (NCT03833791). This research also has the permission of the Córdoba Bioethical Committee, in the Department of Health at the Regional Government of Andalusia (Act no. 284, ref. 4156).
: Not applicable.
: The authors declare that they have no competing interests.