Funding for this research was provided by:
Banco Santander (BID/ICI-FCSH/SANTANDER UNIVERSIDADES-UBI/2017)
Received: 22 January 2019
Accepted: 5 June 2019
First Online: 15 July 2019
Ethics approval and consent to participate
: Ethics approval of this protocol was conferred by the Ethics Committee of the Centro CHVNG/E (reference number 145/2018–1). The trial will be conducted in compliance with the Declaration of Helsinki Ethical Principles (1975). Informed written consent will be obtained from all participants before enrolment.
: Not applicable.
: The authors declare that they have no competing interests.