1. Department of Ophthalmology, University of Occupational and Environmental Health, Kitakyushu, Japan
2. Division of Ophthalmology, Matsue Red Cross Hospital, Matsue, Japan
3. Department of Ophthalmology, Hamamatsu University School of Medicine, Shizuoka, Japan
4. Department of Ophthalmology, Fukuoka University, Fukuoka, Japan
5. Department of Ophthalmology, Kindai University Faculty of Medicine, Osakasayama, Japan