Funding for this research was provided by:
Institut Investigació i Innovació Parc Taulí (CIR2016/009)
Received: 16 April 2018
Accepted: 11 December 2018
First Online: 7 January 2019
Ethics approval and consent to participate
: The study has been approved by the Research Ethics Committee of our centre (<i>Comité Ético de Investigación Clínica de la Corporació Sanitària Parc Taulí</i>) on April 2015. All participants are informed and asked for informed consent before any study procedure.
: Not applicable.
: The authors declare that they have no competing interests.
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