1. ONSEN Medical Science Research Center, Japan Health & Research Institute, 3-1-4 Nihonbashi, Chuo-ku, Tokyo 103-0014, Japan
2. Tokyo City University, 8-9-18 Todoroki, Setagaya-ku, Tokyo 158-8586, Japan
3. Jichi Medical University, 3311-1 Yakushiji, Shimosa City, Tochigi 329-0498, Japan