1. Center for Kampo Medicine, Faculty of Environment and Information Study, Keio University School of Medicine, 5322 Endo, Fujisawa, Kanagawa 252-0882, Japan
2. Division of Internal Medicine, Saiseikai Central Hospital, 1-14-17 Mita, Minato-ku, Tokyo 108-0073, Japan
3. Department of Clinical Research and Informatics, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan
4. Department of Ophthalmology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan
5. Department of Preventive Medicine and Public Health, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
6. Tokyo Dental College, Ichikawa General Hospital, 5-11-13 Sugano, Ichikawa, Chiba 272-8513, Japan