[1]School of Nursing, Seirei Christopher University, Hamamatsu, Shizuoka 433-8558, Japan;
[2]Department of Clinical Physiology, Toho University, Sakura, Chiba 285-8741, Japan;
[3]Department of Biomedical Engineering, Toyo University, Kawagoe, Saitama 350-8585, Japan;