1. Orbit, Oculoplasty, Reconstructive and Aesthetic Services, Medical Research Foundation, Sankara Nethralaya, Chennai, India
2. Orbit, Oculoplasty, Reconstructive and Aesthetic Services, Aditya Birla, Sankara Nethralaya (A Unit of Medical Research Foundation, Chennai), Kolkata, India
3. Department of Interventional Radiology, Apollo Speciality Hospitals, Chennai, India
4. Shri Bhagwan Mahavir Vitreoretinal Services, Sankara Nethralaya, Chennai, India