Funding for this research was provided by:
Consumers, Health and Food Executive Agency (2012-12-14)
Instituto de Salud Carlos III (PI16/01492, PI19/01313)
CIBERER (CIBERER-ACCI 2016-03)
Received: 21 April 2020
Accepted: 29 June 2020
First Online: 15 October 2020
Ethics approval and consent to participate
: The project was approved by the Institutional Review Board of the Coordinating Center (Vall d’Hebron Research Institute, Barcelona), and by review boards of each institution recruiting participants.
: Not applicable.
: The authors declare that they have no competing interests.