1. Department of Ophthalmology, University of Tokyo Graduate School of Medicine, Bunkyo-ku, Tokyo, Japan
2. Yotsuya Shirato Eye Clinic, Shinjuku-ku, Tokyo, Japan
3. Tajimi Iwase Eye Clinic, Tajimi-shi, Gifu, Japan
4. Center Hospital of the National Center for Global Health and Medicine, Shinjuku-ku, Tokyo, Japan