1. Departments of Clinical Pathology and
2. Pediatrics, College of Medicine, Inha University Hospital, Inchon, 400-103, South Korea
3. Department of Pathology, Nagoya University Hospital, Nagoya, 466-0065 Japan
4. Department of Pharmacology and Toxicology, Medicinal Toxicology Center, College of Medicine, Inha University, Inchon, 400-103, South Korea