1. Department of Pediatrics; Hokkaido University School of Medicine; Hokkaido, Japan
2. Department of Pediatrics; Teine Keijinkai Hospital; Hokkaido, Japan
3. National Institutes of Health; National Cancer Institute; Metabolism Branch; Bethesda, MD
4. Department of Allergy; Shizuoka Children’s Hospital; Shizuoka, Japan
5. Department of Pediatrics; Kohnan Hospital; Hokkaido, Japan
6. Department of Pediatrics; Kitami Red Cross Hospital; Hokkaido, Japan