1. Nutrition Department, University of California, Davis, CA, USA;
2. US Department of Agriculture, Western Human Nutrition Research Center, Davis, CA, USA;
3. Enteric and Respiratory Infections Unit, Infectious Diseases Division, icddr,b, Dhaka, Bangladesh;
4. Department of Clinical Trial and Clinical Epidemiology, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan