1. Institute
for Bee Products and Health Science, Yamada Bee Company, Inc., 194
Ichiba, Kagamino-cho, Tomata-gun 708-0393, Japan
2. Department
of Geriatric Medicine, Graduate School of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
3. Department
of Pharmaceutics, Faculty of Pharmaceutical Sciences, Okayama University, Kita-ku, Okayama 700-8530, Japan