Asahina Naoko, Matsunami Yukiko, Sueda Keitaro, Shiraishi Hideaki, Saitoh Shinji
Department of Pediatrics, Hokkaido University Graduate School of Medicine, Kita-ku, Sapporo, Japan.
Pediatr Int. 2010 Oct;52(5):838-41. doi: 10.1111/j.1442-200X.2010.03132.x.