1. Doheny Image Reading Center, Doheny Eye Institute, Los Angeles, California, United States
2. Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, California, United States
3. Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Ophthalmology and Visual Sciences Key Laboratory, Capital Medical University, Beijing, China
4. Department of Ophthalmology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
5. Ophthalmology Clinic, Department of Medicine and Science of Ageing, University G. D'Annunzio Chieti-Pescara, Chieti, Italy