1 Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA. Electronic address: sheela.sinharoy@emory.edu.
2 Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA.
3 Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA.