Received: 2 April 2020
Accepted: 15 June 2020
First Online: 1 July 2020
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of Gipuzkoa (protocol code: AGS-SOH-2017-01). Patient consent were not required because all the data collected in this project were processed anonymously in strict accordance with current data protection legislation (Law 41/2002 of the 14 November; Law 15/1999 of 15 December).
: Not applicable.
: The authors declare that they have no “competing interests” in this section.