1. Department of Materials Engineering, Graduate School of Engineering Science, Akita University, 1-1, Tegatagakuen-machi, Akita-shi, Akita 010-8502, Japan
2. Department of Life Science, Graduate School of Engineering Science, Akita University, 1-1, Tegatagakuen-machi, Akita-shi, Akita 010-8502, Japan
3. Department of General Internal Medicine and Clinical Laboratory Medicine, Graduate School of Medicine, Akita University, 1-1-1, Hondo, Akita-shi, Akita 010-8543, Japan