Received: 28 April 2020
Accepted: 18 December 2020
First Online: 7 January 2021
Ethics approval and consent to participate
: Ethical approval for the PGP-COS study was granted by the University Research Ethics Committee at Trinity College Dublin. All participants provided explicit informed consent before participating in the PGP-COS study. Participants provided informed explicit verbal consent before continuing interviews and then posted written consent in the mail. Participants in the Delphi study provided informed explicit written consent before partaking in the study.
: Not applicable.
: The authors declare they have no competing interests.