1. Department of Metabolism, Endocrinology, and Molecular Medicine, Osaka City University Graduate School of Medicine, Osaka 545-8585, Japan
2. Department of Vascular Medicine, Osaka City University Graduate School of Medicine, Osaka 545-8585, Japan
3. Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka 545-8585, Japan
4. Department of Geriatric and Environmental Dermatology, Nagoya City University Graduate School of Medical Sciences, Nagoya 467-8601, Japan