1. Department Community Medicine, Kathmandu University School of Medical Sciences, Dhulikhel, Nepal
2. Professor, School of Science, Department of Environmental Science and Engineering, Kathmandu University, Dhulikhel, Nepal
3. Department of Health science, Brigham Young University, Provo, United States
4. Department of Environmental Safety and Occupational Health Management, The University of Findlay, ESOH, Shaker Heights, United States
5. Department of Health Science, 4103 Life Sciences Building, Brigham Young University, Provo, United States
6. Professor, Department of Community Medicine, Kathmandu Medical College, Kathmandu University, Sinamangal, Kathmandu, Nepal