Funding for this research was provided by:
Instituto de Salud Carlos III (PI12/00850, CPII13/00022, CA12/00333, CES11/021)
European Regional Development Fund
Spanish Ministry of Economy and Competitiveness (PTA-2013-8265-I)
Received: 6 July 2017
Accepted: 24 January 2018
First Online: 13 February 2018
Ethics approval and consent to participate
: All participating individuals provided their informed written consent, and the protocols were approved by the Hospital Universitario La Paz and Spanish AIDS Research Network ethics committees.
: Not applicable
: The authors declare that they have no competing interests.
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