[1] Kagoshima Univ, Sch Hlth Sci, Kagoshima, Kagoshima, Japan
[2] Kagoshima Univ Hosp, Dept Nursing, Kagoshima, Kagoshima, Japan
[3] Tokyo Med Univ, Sch Nursing, Shiju Ku, Tokyo, Japan
[4] Saitama Med Univ, Dept Biostat, Iruma, Saitama, Japan
[5] Nucl Safety Res Assoc, Tokyo, Japan
[6] Kwassui Womens Univ, Dept Nursing, Omura, Nagasaki, Japan
[7] Tsuruga Nursing Univ, Sch Nursing, Tsuruga, Fukui, Japan