1. Department of Ophthalmology, Punjab Institute of Medical Sciences, Jalandhar, Punjab, India
2. Department of Ophthalmology, Manipal TATA Medical College, Manipal Academy of Higher Education, Manipal, Karnataka, India
3. Department of Community Medicine, Manipal TATA Medical College, Manipal Academy of Higher Education, Manipal, Karnataka, India
4. Department of Interns, Punjab Institute of Medical Sciences, Jalandhar, Punjab, India