Text and Data Mining valid from 2019-02-12
Received: 13 September 2018
Accepted: 7 February 2019
First Online: 12 February 2019
Compliance with ethical standards
: Bismil Ali, Tuomas Brinck, Lauri Handolin and Tomas Belzunegui declare that they have no conflict of interest.
: The study has been approved by the Ethics Committee of the Department of Health of the government of Navarra. The subjects gave their informed consent to the work. The investigation carried out was approved and evaluated by the National Agency for Quality and Accreditation of Spain, ANECA. This study has also been approved by the review board of the Helsinki University Hospital.