1. Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Center for Diabetes, Shanghai Key Clinical Center for Metabolic Disease, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai, China.
2. Department of Ophthalmology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.
3. Department of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated Sixth Peoples Hospital, Shanghai Institute of Ultrasound in Medicine, Shanghai, China.
4. Diabetes Institute of the Walter Reed National Military Medical Center, Bethesda, Maryland.
5. Medtronic Diabetes, Northridge, California.