1. Department of Otorhinolaryngology and Head and Neck Surgery, Shri Ramkrishna Institute of Medical Sciences and Sanaka Medical College, Durgapur, West Bengal, India
2. Department of Ophthalmology, IMS and SUM Hospital, Bhubaneshwar, Odisha, India
3. Department of Ophthalmology, JPM Rotary Eye Hospital and Research Institute, Cuttack, Odisha, India