1. Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, GA 30322
2. Universidade Federal de Pelotas, Pelotas 96090-790, Brazil
3. Department of Nutrition, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC 27516-2524
4. Birth to Twenty Research Programme, University of the Witwatersrand and the Human Sciences Research Council, Durban 4014, South Africa
5. MRC Epidemiology Resource Centre, University of Southampton, Southampton S016 6YD, UK
6. S.L. Jain Hospital, Delhi 464551, India
7. Indian Council of Medical Research, New Delhi 138648, India
8. Office of Population Studies Foundation, University of San Carlos, Cebu 6000, Philippines