1. Department of Population Medicine and Diagnostic Sciences and Master of Public Health Program, Cornell University, Ithaca, New York, USA
2. Division of Nutritional Sciences, Cornell University, Ithaca, New York, USA
3. Robert Wood Johnson Medical School, New Brunswick, New Jersey, USA
4. Department of Anthropology, Northwestern University, Evanston, Illinois, USA
5. Kenya Medical Research Institute Center of Global Health Research, Kisumu, Kenya
6. Institute for Policy Research, Northwestern University, Evanston, Illinois, USA