1. Centre for Public Health, School of Medicine, Dentistry and Biomedical Sciences. Queens, University Belfast, UK
2. Department of Ophthalmology, College of Medicine, University of Ibadan, Nigeria
3. College of Health Sciences, University of Kwa-Zulu Natal, South Africa
4. J.E. Cairns School of Business and Economics, National University of Ireland, Galway, Ireland
5. Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China