1. Department of Ophthalmology, Kindai University Hospital, Osakasayama City, Osaka, Japan
2. Department of Ophthalmology, Kindai University Nara Hospital, Ikoma City, Nara, Japan
3. Sakibana Hospital, Izumi City, Osaka, Japan
4. Department of Ophthalmology, Yamaguchi University Graduate School of Medicine, Ube City, Yamaguchi, Japan
5. Division of Cornea and Ocular Surface, Ohshima Eye Hospital, Fukuoka City, Fukuoka, Japan