1. Division of Ophthalmology, Department of Visual Sciences, Nihon University School of Medicine, 30-1 Oyaguchi-Kamicho, Itabashi-ku, Tokyo 173-8610, Japan
2. The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo 108-8639, Japan
3. RIBOMIC Inc., Minato-ku, Tokyo 108-0071, Japan