Received: 25 May 2020
Accepted: 26 July 2020
First Online: 14 August 2020
Ethics approval and consent to participate
: This study was conducted according to national regulations, institutional policies, and in the tenets of the Helsinki Declaration. This study was approved, with the Valladolid Health Area Drug Research Ethics Committee acting as the main committee, in a meeting held on March 31, 2020, and with the reference number “PI 20–172-NO-HCU”. Moreover, it was approved by each of the local institutional Ethics Committee of the 19 hospitals involved.
: The authors stated no conflicts of interest.