1. Program for Emerging Infections, Infectious Diseases Division, icddr,b, Dhaka, Bangladesh;
2. School of Public Health and Community Medicine, University of New South Wales, Sydney, Australia;
3. Khulna University of Engineering and Technology, Khulna, Bangladesh;
4. Mahidol University, Nakhon Pathom, Thailand;
5. Centre for Primary Health Care and Equity, University of New South Wales, Sydney, Australia;
6. Department of Infectious Diseases and Microbiology, School of Medicine, International University of Health and Welfare, Narita, Japan