Funding for this research was provided by:
Instituto de Salud Carlos III (RETICS RD16/0012 RIER, FIS 16/00032)
Text and Data Mining valid from 2019-11-05
Received: 6 August 2019
Accepted: 17 October 2019
First Online: 5 November 2019
Ethics approval and consent to participate
: All patients signed a written informed consent, and the study was approved by ethics committees of Hospital Clinic, Barcelona, and Hospital 12 de Octubre, Madrid (N° CEI:17/085).
: Not applicable.
: The authors declare that they have no competing financial interests. A.V. is currently working as editor at Springer Healthcare Iberica SL, Madrid, Spain and declares competing non-financial interests.