1 Department of Rheumatology and Clinical Immunology, Sapporo Medical University School of Medicine, South West 16, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan.
2 Department of Cardiovascular, Renal and Metabolic Medicine, Sapporo Medical University School of Medicine, South-1, West-16, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan.
3 Department of Rheumatology and Clinical Immunology, Sapporo Medical University School of Medicine, South West 16, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan.
4 Department of Rheumatology and Clinical Immunology, Sapporo Medical University School of Medicine, South West 16, Chuo-ku, Sapporo, Hokkaido, 060-8543, Japan.