Funding for this research was provided by:
Instituto de Salud Carlos III (PI15/01186-Fondo Europeo de Desarrollo Regional (FEDER))
Text and Data Mining valid from 2019-06-13
Received: 5 October 2018
Accepted: 6 June 2019
First Online: 13 June 2019
Ethics approval and consent to participate
: The study was conducted in accordance with the Declaration of Helsinki and was approved by the Ethics Committee of the Hospital La Paz.
: Not applicable.
: The authors declare that they have no competing interest.