1. Global Newborn Health Laboratory, Department of Pediatric Newborn Medicine, Brigham and Women’s Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts;
2. Maternal and Child Health Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh;
3. Department of International Health, International Center for Maternal and Newborn Health, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland; and
4. Institute of Epidemiology, Disease Control, and Research, Dhaka, Bangladesh