[1] Tokai Univ, Fac Nursing, Sch Med, 143 Shimokasuya, Isehara, Kanagawa 2591193, Japan
[2] Chiba Univ, Grad Sch Nursing, Dept Nursing Syst Management, Chiba, Chiba, Japan
[3] Keio Univ, Fac Nursing & Med Care, Fujisawa, Kanagawa, Japan
[4] St Marianna Univ Hosp, Kawasaki, Kanagawa, Japan
[5] Tokyo Metropolitan Univ, Fac Hlth Sci, Dept Nursing Sci, Arakawa Ku, Tokyo, Japan