1. Division of Applied Science and Basic Engineering, Faculty of Engineering, Shizuoka University, Johoku 3-5-1, Hamamatsu, Shizuoka 432-8561, Japan, Department of Environmental and Molecular Medicine, Mie University School of Medicine, Edobashi 2-174, Tsu, Mie 514-8507, Japan, and Photon Medical Research Center, Hamamatsu University School of Medicine, Handayama 1-20-1, Hamamatsu, Shizuoka 431-3192, Japan