[1] Kyushu Univ, Grad Sch Med Sci, Dept Pediat, Fukuoka, Fukuoka, Japan
[2] Seinan Jogakuin Univ, Dept Hlth & Welf, Kitakyushu, Fukuoka, Japan
[3] Fukuoka Childrens Hosp, Dept Pediat Neurol, Fukuoka, Fukuoka, Japan
[4] Kyoto Tachibana Univ, Dept Nursing, Kyoto, Japan
[5] Univ Miyazaki, Interdisciplinary Grad Sch Med & Vet Med, Dept Bio Med Eth, Miyazaki, Japan
[6] Fukuoka Childrens Hosp, Fukuoka, Fukuoka, Japan
[7] Univ Tsukuba, Dept Child Hlth, Fac Med, Tsukuba, Ibaraki, Japan
[8] Kobe Univ, Grad Sch Med, Dept Palliat Med, Kobe, Hyogo, Japan