Received: 21 April 2021
Accepted: 30 June 2021
First Online: 27 July 2021
: All participants gave their written informed consent. The study protocol and design were approved by the Human Research Ethics Committee of the University of Granada (no. 924) and the Servicio Andaluz de Salud and adhered to the tenets of the Declaration of Helsinki, as revised in 2013.
: Not applicable.
: The authors declare that they have on competing interests.