Funding for this research was provided by:
European Commission Joint Research Centre
Received: 30 April 2019
Accepted: 23 March 2020
First Online: 5 June 2020
Ethics approval and consent to participate
: Participation in this study was voluntary and signed consent was obtained from all those providing feedback. The methods for this study were approved by the Hamilton Integrated Research Ethics Board (HiREB). The Reference number for this project is 2830.
: Consent for publication as obtained from all participants in this study.
: Eight of the authors of this study are members of the GRADE Working Group and have contributed to the development of the GRADE approach to various degrees (TB, HJS, NS, WW, RN, GPM, TP, ML).