Funding for this research was provided by:
Euskal Herriko Unibertsitatea (Acción Especial “Desarrollo e implementación del test de diagnóstico para COVID-19)
Received: 13 November 2020
Accepted: 22 September 2021
First Online: 3 October 2021
: The study was conducted at the University of the Basque Country (UPV/EHU, Leioa, Spain) in collaboration with the Cruces University Hospital after approval by the UPV/EHU Ethics Committee (Project 2020/059, CEIAB M30/2020/074).
: Not applicable.
: The authors declare that they have no competing interests<b>.</b>