1. Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba 260-8675, Japan
2. Preeminent Medical Photonics, Education & Research Center, Hamamatsu University, School of Medicine, 1-20-1, Higashi-ku, Hamamtsu, Shizuoka 431-3192, Japan
3. Department of Bioimaging Information Analysis, Gunma University, Graduate School of Medicine, Maebashi 371-8511, Japan