1. School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
2. Department of Geology and Geophysics, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India
3. Graduate School of Public Health, San Diego State University, San Diego, California 92182, United States
4. Interdisciplinary Centre for Water Research, Indian Institute of Science, Bangalore 560012, Karnataka, India