1. Vitreoretinal Service, Moorfields Eye Hospital, National Health Service Trust, London, United Kingdom
2. Institute of Ophthalmology, University College London, London, United Kingdom
3. Helen Keller International, New York, New York
4. Helen Keller International, Dhaka, Bangladesh
5. Department of Ophthalmology and Visual Sciences, University of Adelaide, Adelaide, South Australia, Australia
6. Retina Service, National Institute of Ophthalmology and Hospital, Dhaka, Bangladesh
7. Retina Service, Chittagong Eye Infirmary and Training Complex, Chittagong, Bangladesh
8. Massachusetts Eye and Ear, Harvard Medical School, Boston