1 Graduate School of Nursing Science, St. Luke's International University, 10-1 Akashi-cho, Chuo-ku, Tokyo, 104-0044, Japan. kobayashi.masamitsu.at@slcn.ac.jp.
2 Graduate School of Medicine, Mie University, Tsu, Japan.
3 Japanese Red Cross Kyushu International College of Nursing, Munakata, Japan.