[1] Tohoku Univ Grad Sch Med, Dept Child Hlth Nursing, Sendai, Miyagi, Japan
[2] Tokyo Healthcare Univ, Fac Healthcare, 4 1 17 Higashi Gotanda,Shinagawa ku, Tokyo 1418648, Japan
[3] Miyagi Univ, Dept Nursing, Sendai, Miyagi, Japan
[4] Akita Univ Grad Sch Med, Fac Med, Sch Hlth Sci, Dept Nursing, Akita, Japan
[5] Tohoku Univ Grad Sch Med, Dept Pediat, Sendai, Miyagi, Japan
[6] Sapporo Hokuyu Hosp, Sapporo, Hokkaido, Japan
[7] Kanagawa Childrens Med Ctr, Div Hematol & Oncol, Yokohama, Kanagawa, Japan
[8] Osaka Womens & Childrens Hosp, Dept Hematol Oncol, Izumi, Osaka, Japan
[9] St Lukes Int Hosp, Dept Pediat, Chuo Ku, Tokyo, Japan
[10] Child Chemo Clin, Kobe, Hyogo, Japan
[11] Kitakyushu City Yahata Hosp, Childrens Med Ctr, Kitakyushu, Fukuoka, Japan
[12] Ehime Prefectural Cent Hosp, Pediat Med Ctr, Matsuyama, Ehime, Japan
[13] Univ Tsukuba, Fac Med, Dept Child Hlth, Tsukuba, Ibaraki, Japan
[14] Ibaraki Childrens Hosp, Child Hlth & Canc Res Ctr, Mito, Ibaraki, Japan