1. Orbit, Oculoplasty, Reconstructive and Aesthetic Services, Sankara Nethralaya, Medical Research Foundation, Chennai, Tamil Nadu, India
2. Orbit, Oculoplasty, Reconstructive and Aesthetic Services, Aditya Birla Sankara Nethralaya, Kolkata, (A Unit of Medical Research Foundation, Chennai), West Bengal, India
3. Larson and Toubro Department of Ocular Pathology, Sankara Netherlaya, Vision Research Foundation, Chennai, Tamil Nadu, India