1. Department of Ophthalmology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
2. Department of Neurology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
3. Department of Histopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
4. Postgraduate Institute of Medical Education and Research Department of Otolaryngology and Head Neck Surgery, Chandigarh, India