1. Department of Ophthalmology, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India
2. Department of ENT, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India
3. Department of Radiodiagnosis, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India
4. Department of Pathology, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India