Article History
Received: 6 February 2020
Accepted: 30 October 2020
First Online: 23 November 2020
Ethics approval and consent to participate
: Ethics approval for this project was obtained from Human Ethics committee at The University of Sydney (Project number: 2017/723) and the Research Ethics Review Committee (WHO ERC) at WHO (Protocol ID: 00001). Written informed consent was obtained from all participants.
: Not applicable.
: ZW, QG and LP declare that they have no competing interests. LB has chaired WHO guideline development committees and provided support for the Essential Medicines List.