1. From the Department of Ophthalmology, Keio University School of Medicine, Shinjuku, Japan;
2. the Department of Ophthalmology, Tokyo Dental College Ichikawa General Hospital, Tokyo, Japan;
3. the Department of Ophthalmology, Tokyo University School of Medicine, Tokyo, Japan;
4. the Department of Ophthalmology, Kanazawa University School of Medicine, Kanazawa, Japan.
5. the Department of Ophthalmology, Ehime University School of Medicine, Matsuyama, Japan; and
6. the Department of Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto, Japan.