1. Centre for Public Health, Queens University Belfast, Belfast, UK
2. Orbis International, New York, NY, USA
3. Department of Paediatrics, Life for a Child & Changing Diabetes in Children Programme, Bangladesh Institute of Research & Rehabilitation in Diabetes, Endocrine & Metabolic Disorders (BIRDEM), Diabetic Association of Bangladesh, Dhaka, Bangladesh
4. Orbis Bangladesh, Dhaka, Bangladesh
5. Department of Ophthalmology, University of Colorado School of Medicine, Aurora, CO, USA
6. Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China