Funding for this research was provided by:
Instituto de Salud Carlos III (PI15/00662, PI10/01607, PI15/01386, PI10/01753)
Fundació la Marató de TV3 (092230/092231)
Received: 25 July 2019
Accepted: 21 November 2019
First Online: 2 December 2019
Ethics approval and consent to participate
: The research protocol was approved by the Ethics Committees of Bellvitge University Hospital and Hospital Universitari Sant Joan, and all participants provided written informed consent after have received a full explanation of the study.
: Not applicable
: The authors declare that they have no competing interests.