Funding for this research was provided by:
Instituto de Salud Carlos III (PI15/01486)
Received: 25 March 2018
Accepted: 11 December 2018
First Online: 14 January 2019
Ethics approval and consent to participate
: This project was approved by the Research Ethics Committee of the University Hospital of Albacete on 26 June 2014. The subjects selected will be provided with oral and written information of the study objectives and will be asked to sign the consent form before participating.
: Not applicable.
: The authors declare that they have no competing interests.
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