1. Department of Global Health, University of Washington, Seattle, Washington.
2. Department of Nursing, University of Washington, Seattle, Washington.
3. Partners in Health Research and Development, Thika, Kenya.
4. Department of Bioethics and Humanities, University of Washington, Seattle, Washington.
5. Department of Epidemiology, University of Washington, Seattle, Washington.
6. Department of Medicine, University of Washington, Seattle, Washington.
7. Kenyatta National Hospital, Nairobi, Kenya.
8. Nuffield Department of Population Health, The Ethox Center and Wellcome Center for Ethics and Humanities, University of Oxford, Oxford, United Kingdom.