1 Center for Population Health Sciences, Division of Primary Care and Population Health, Department of Medicine, Stanford University, Stanford, CA 94035, USA.
2 Center on Food Security and the Environment, Stanford University, Stanford, CA 94035, USA.
3 Centre for Global Child Health, Hospital for Sick Children, Toronto, ON, Canada; Center of Excellence in Women and Child Health, Aga Khan University, Karachi, Pakistan.
4 Institute for International Programs, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA.
5 Center on Food Security and the Environment, Stanford University, Stanford, CA 94035, USA; Department of Earth System Science, Stanford University, Stanford, CA 94035, USA.
6 Center for Population Health Sciences, Division of Primary Care and Population Health, Department of Medicine, Stanford University, Stanford, CA 94035, USA; Center for Health Policy/Center for Primary Care and Outcomes Research, Stanford University, Stanford, CA 94035, USA. Electronic address: [email protected].