1. Department of Physiology, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
2. Harold Hamm Diabetes Center, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
3. Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
4. Department of Medicine, The University of Melbourne, Melbourne, Australia
5. National Health and Medical Research Council Clinical Trials Centre, University of Sydney, Sydney, Australia