1. Moorfields Eye Hospital, NHS Foundation Trust, London, UK
2. Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
3. Advance Eye Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India
4. Chest and Allergy Clinic, St. Mary’s Hospital, Imperial College Healthcare National Health Service Trust, London, UK
5. National Healthcare Group Eye Institute, Tan Tock Seng Hospital, Singapore, Singapore
6. Singapore Eye Research Institute, Singapore, Singapore