1. Department of Microbiology, Mymensingh Medical College, Mymensingh, Bangladesh.
2. Department of Hygiene, Sapporo Medical University School of Medicine, Sapporo, Japan.
3. Department of Paediatric Surgery, Mymensingh Medical College, Mymensingh, Bangladesh.
4. Sheikh Hasina Medical College, Jamalpur, Bangladesh.
5. President Abdul Hamid Medical College, Kishorgonj, Bangladesh.
6. National Institute of Preventive and Social Medicine, Dhaka, Bangladesh.