1. Department of Occupational and Environmental Health, Nagoya University Graduate School of Medicine, Nagoya, Japan
2. Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
3. Department of Metabolic Regulation, Shinshu University Graduate School of Medicine, Matsumoto, Japan
4. Laboratory of Metabolism, National Cancer Institute, National Institutes of Health, Department of Health and Human Services, Bethesda, Maryland, USA