Funding for this research was provided by:
Instituto de Salud Carlos III (PI15/00752, Miguel Servet Contract, PI15/01118)
Consejería de Educación, Juventud y Deporte, Comunidad de Madrid (Program I2, S2013/MIT-2862)
Received: 4 October 2018
Revised: 9 January 2019
Accepted: 27 January 2019
First Online: 13 February 2019
Ethics approval and consent to participate
: The protocol of this study was reviewed and approved by the Human Research Committee of Hospital Universitario La Paz (Date of Approval: 03/06/2015). All experiments were carried out in accordance with the approved guidelines and regulations.
: All authors have approved the submission for publication.
: The authors declare that they have no competing interests.
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