1. Retina Service, Department of Ophthalmology; King George's Medical University; Lucknow India
2. Developmental Toxicology Division; Indian Institute of Toxicology and Research; Lucknow India
3. Department of Ophthalmology; Pallas Klinik; Olten Switzerland
4. Department of Cardiovascular Diseases; International Clinical Research Center; St Anne's University Hospital and Masaryk University; Brno Czech Republic