Funding for this research was provided by:
Bill and Melinda Gates Foundation (INV-008426)
Received: 18 March 2021
Accepted: 2 July 2021
First Online: 20 July 2021
: The study received ethical approval from the Medical Research and Ethics Committee at the Faculty of Medicine, Public Health and Nursing, University Gadjah Mada, and the Johns Hopkins Bloomberg School of Public Health Institutional Review Board for secondary data analysis.
: Not applicable.
: The authors declare that they have no competing interests.