[1] Yokohama City Univ, Sch Med, Dept Nursing, Adult Nursing, 3 9 Fukuura, Kanazawa ku, Yokohama, Kanagawa 2360004, Japan
[2] Samsung Med Ctr, Heart Vasc Stroke Inst, Cardiac Ctr, Dept Nursing, 81 Irwon Ro, Seoul 06351, South Korea
[3] Natl Taiwan Univ, Coll Med, Sch Nursing, 1 Jen Ai Rd Sect, Taipei 100, Taiwan