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Contributors JWD and KRO drafted the initial manuscript. All authors conceived the paper and contributed intellectually to the work herein. All authors read and approved the final manuscript.
Competing interests None declared.
Funding All of the authors are affiliated with the Consortium for Affordable Medical Technology. This article was funded by the Bacca Foundation and the Omidyar Network. David Bangsberg also received support from MH K024 87224.
Provenance and peer review Commissioned; externally peer reviewed.