Funding for this research was provided by:
Instituto de Salud Carlos III (FIS 13/0288 and 16/1512, FIS 16/609)
Horizon 2020 (635316)
FP7 Health (305483-2)
Received: 8 November 2017
Accepted: 13 March 2018
First Online: 5 April 2018
Ethics approval and consent to participate
: Ethical approval was obtained from the Clinical Research Ethics Committee of La Paz University Hospital in Madrid (reference PI-1793). Study participants gave written informed consent. Registration: ClinicalTrials.gov NCT01133093.
: Not applicable.
: The authors declare that they have no competing interests.
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