1Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
2Department of Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
3Division of Pediatrics, Hamanomachi Hospital, Fukuoka, Japan
Reprint requests and correspondence: Shouichi Ohga, MD, Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
Received January. 4, 2000; accepted June. 21, 2000