Funding for this research was provided by:
Ministerio de Economía, Industria y Competitividad, Gobierno de España (MTM2015-68140-R)
Agència de Gestió d’Ajuts Universitaris i de Recerca (#016FI_B 00272)
Received: 1 January 2019
Accepted: 9 October 2019
First Online: 21 November 2019
Ethics approval and consent to participate
: In CRCGEN dataset, written informed consent was required from all participants. Each Hospital’s ethics committees (Bellvitge and León) approved the protocols of the study.
: Not applicable
: The authors declare that they have no competing interests.