1. Department of Ophthalmology, Tokyo Dental College, Sugano 5-11-13 Ichikawa-shi, Chiba 272–8513
2. Department of Ophthalmology, Keio University School of Medicine, Shinjuku-ku, Tokyo 160–8582
3. Second Department of Internal Medicine, Saitama Medical School, Iruma-gun, Saitama, 350–0451 Japan