1. Department of Microbiology, Post Graduate Institute Medical Education and Research, Chandigarh, India
2. Advanced Eye Centre, Post Graduate Institute Medical Education and Research, Chandigarh, India
3. Department of Ophthalmology, Vitreoretina and Uveitis Services, Nepal Eye Hospital, Kathmandu, Nepal
4. Department of Internal Medicine, Post Graduate Institute Medical Education and Research, Chandigarh, India