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Kala M. Mehta, Sonali V. Rammohan, and Hau L. Lee are with the Value Chain Innovation Initiative, Stanford Graduate School of Business, Stanford University, Stanford, CA. Francois Rerolle was with the Department of Civil and Environmental Engineering, Stanford University. Davis C. Albohm and Lesley Sept are with the Stanford Institute for Innovation in Developing Economies, Stanford University. George Muwowo was with the Stanford Graduate School of Business Field Office, Riders for Health Evaluation Program, Livingstone, Zambia. Kala M. Mehta and Heidi Moseson are with the Department of Epidemiology and Biostatistics, University of California, San Francisco. Eran Bendavid is with the Department of General Medical Disciplines, Stanford University School, of Medicine Stanford.