1. Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia;
2. International Centre for Diarrheal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh;
3. University at Buffalo, Buffalo, New York;
4. Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland;
5. Department of Medicine, Rangpur Medical College Hospital, Rangpur, Bangladesh;
6. Facultad de Medicina, Universidad Nacional Autónoma de México, Ciudad de México, México;
7. Stanford University, Stanford, California