1. Lamont-Doherty Earth Observatory; Columbia University; Palisades New York USA
2. Queens College; City University of New York; Flushing New York USA
3. Statistics Department; Columbia University; New York New York USA
4. Department of Epidemiology, Mailman School of Public Health; Columbia University; New York New York USA
5. Department of Environmental Health Sciences, Mailman School of Public Health; Columbia University; New York New York USA
6. National Institute of Preventive and Social Medicine; Dhaka Bangladesh
7. Geology Department; Dhaka University; Dhaka Bangladesh