1. Department of Ophthalmology, Japan Community Healthcare Organization, Tokyo Shinjuku Medical Center, Tokyo, Japan
2. Department of Ophthalmology, University of Tokyo Hospital, Tokyo, Japan
3. Department of Ophthalmology, Itoh Clinic, Saitama, Japan
4. Department of Gastrointestinal Surgery, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
5. Department of Ophthalmology, Nihon University Itabashi Hospital, Tokyo, Japan