1. Department of Internal Medicine II (H.N.), Hamamatsu University School of Medicine, Handayama 1-20-1, Hamamatsu, Shizuoka 4313129, Japan
2. Ito Hospital (J.Y.N., K.I.), Jingumae 4-3-6, Shibuya-ku, Tokyo 1508308, Japan
3. Kuma Hospital (S.F., A.M.), Shimoyamatedori 8-2-35, Chuo-ku, Kobe 6500011, Japan
4. Sumire Hospital (N.H.), Furuichi 1-20-85, Joto-ku, Osaka 536-0001, Japan