1. Singapore Eye Research Institute, The Academia, Discovery Tower Level 6, 20 College Road, 169857 Singapore
2. Organic and Biomimetic Chemistry Research Group, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 (S4), Ghent B-9000, Belgium
3. Lee Kong Chian School of Medicine, Nanyang Technological University, 636921 Singapore