1. Department of Internal Medicine; Hakodate Municipal Hospital; Hakodate Japan
2. Department of Hematology; Hokkaido University Graduate School of Medicine; Sapporo Japan
3. Department of Clinical Pathology; Hakodate Municipal Hospital; Hakodate Japan
4. Department of Plastic and Reconstructive Surgery; Hakodate Municipal Hospital; Hakodate Japan
5. Department of Dermatology; Sapporo Medical University School of Medicine; Sapporo Japan