1. Department of Statistics, Shahjalal University of Science & Technology, Sylhet, Bangladesh
2. Chander Hat Degree College, Nilphamari, Bangladesh
3. Department of Neurosurgery, College of Medicine, University of Florida, Gainesville, Florida, USA
4. Department of General Educational and Development, Daffodil International University, Dhaka, Bangladesh
5. Division of Prevention Science, Department of Medicine, University of California San Francisco (UCSF), San Francisco, California, USA