Text and Data Mining valid from 2019-12-01
Received: 20 September 2019
Accepted: 13 November 2019
First Online: 6 December 2019
Ethics approval and consent to participate
: The Clinical Research Ethics Committee of Hospital Clínic of Barcelona, Barcelona, Spain reviewed the ethical, scientific and appropriateness of the study before it was conducted. Approval of the study protocol (reference number: HCB/2012/7211) was obtained in 2012.The CREC-approved written informed consent was obtained from each subject prior to the initiation of any study procedure.
: Not applicable.
: The authors declare that they have no competing interests.