Funding for this research was provided by:
Bill and Melinda Gates Foundation (OPP1160129)
Received: 1 November 2021
Accepted: 20 June 2022
First Online: 7 July 2022
: The qualitative study was approved by institutional review boards in Thailand and the United States in January 2021. In Thailand, the Ethics Committee of the Institute for the Development of Human Research Protections of the MoPH approved the study protocol for implementation on January 8, 2021. In the United States, the Human Research Protection Program of the institutional review board at the University of California, San Francisco approved this research study (# 20–33130) on January 14, 2021. Research aims and conditions were explained to all participants. Informed consent was obtained verbally or in writing before each interview and discussion.
: Not applicable.
: The authors declare that they have no competing interests. DG is a staff member of the World Health Organization; the author alone is responsible for the views expressed in this publication that do not necessarily represent the decisions, policy, or views of the World Health Organization.