1. Department of Neurology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
2. Department of Ophthalmology, Post Graduate Institute of Medical Education and Research, Chandigarh, India
3. Department of Neurologist, Sehgals Neuro and Child Care Center, Amritsar, Punjab, India
4. Department of Pharmacology, Post Graduate Institute of Medical Education and Research, Chandigarh, India