1. Department of Ophthalmology, Okayama University Medical School and Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences; Okayama City Japan
2. Department of Polymer Materials Science; Okayama University Faculty of Engineering and Graduate School of Natural Science and Technology; Okayama City Japan
3. Center for Innovative Clinical Medicine; Okayama University Hospital; Okayama City Japan
4. Department of Orthodontist; Okayama City Japan
5. Department of Shin Nippon Biomedical Laboratories, Ltd.; Kagoshima City Japan