Funding for this research was provided by:
MSD (54576, 55961)
Received: 1 May 2019
Accepted: 1 November 2019
First Online: 14 November 2019
Ethics approval and consent to participate
: The Institutional Review Board (IRB) of the Instituto de Investigación of the Hospital General Universitario Gregorio Marañon waived the need for a written informed consent from patients, as the patients included were not subject to extra procedures or questions. Samples were collected as part of standard care. This was a purely laboratory-based intervention without the involvement of patients. Samples employed in the tests were de-identified before processing. Study code MICRO.HGUGM.2016–004.
: Not applicable.
: The authors declare that they have no competing interests.