1. Department of Public Health Dentistry, Chitwan Medical College, Bharatpur, Chitwan 44207, Nepal
2. Department of Conservative Dentistry and Endodontics, Chitwan Medical College, Bharatpur, Chitwan 44207, Nepal
3. Department of Oral Medicine and Radiology, Chitwan Medical College, Bharatpur, Chitwan 44207, Nepal
4. Kathmandu Medical College, Kathmandu 44600, Nepal