Funding for this research was provided by:
European Regional Development Fund
Department of Health of the Basque Country (2010111098)
KRONIKGUNE–Research Centre on Chronicity (KRONIK 11/006)
Spanish Health Research Fund (PS09/00314, PS09/00910, PS09/00746, PS09/00805, PI09/90460, PI09/90490, PI09/90397, PI09/90453, PI09/90441)
Text and Data Mining valid from 2019-07-25
Received: 5 June 2018
Accepted: 8 July 2019
First Online: 25 July 2019
Ethics approval and consent to participate
: This project was approved by the following bodies in Spain (reference number of approval, when provided, in brackets): the Ethics Committees of Txagorritxu (2009–20), Galdakao, Donostia (5/09), Basurto, La Paz, Clínico San Carlos, Fundación Alcorcón and Marbella (10/09) hospitals, and the Ethics Committee of the Basque Country (PI2014084). All patients were informed of the objectives of the study and invited to voluntarily participate. Patients who agreed to participate provided written consent.
: Not applicable
: The authors declare that they have no competing interests.