Document is current

Article History

Received: 8 September 2021

Accepted: 2 June 2023

First Online: 16 June 2023

Declarations

:

: Ethical clearance for the Voucher study was granted by the Population Council’s Institutional Review Board (IRB) (approval number 496 for Cambodia, 470 for Kenya, and 498 for Bangladesh), the National Ethics Committee for Health Research (NECHR) (approval number 173 and 186) in Cambodia and the Kenya Medical Research Institute (KEMRI) Ethical Review Board (approval number 164). Ethical clearance for the Integra protocol was granted by the Population Council’s IRB (approval number 444), the Ethics Review Committee of London School of Hygiene & Tropical Medicine (approval number 5426), the Kenya Medical Research Institute (KEMRI) Ethical Review Board (approval number 114), and the Scientific Ethics Committee of the Swaziland Ministry of Health (approval number MH/599C). In all primary studies, informed consent was obtained from all participants prior to data collection and in method in accordance with the Declaration of Helsinki. All methods were carried out in accordance with relevant guidelines and regulations. For the present study, an exemption waiver from the Population Council IRB was obtained to conduct secondary analysis of the de-identified data (#EX2018002).

: Not applicable.

: The authors declare no competing interests.