Funding for this research was provided by:
Received: 20 July 2020
Accepted: 26 July 2020
First Online: 16 September 2020
Ethics approval and consent to participate
: The Research Ethics Committee (REC) at Hospital Universitario Puerta de Hierro Majadahonda approved protocol SARTRE on May 22, 2020 (Reference: 77/20). The research team certifies that this trial has received ethical approval from the appropriate ethical committee. Informed consent to participate will be obtained from all participants or from their legally authorized representatives.
: Not applicable.
: The authors declare that they have no competing interests.