Risk Factors for Relapse of Antineutrophil Cytoplasmic Antibody-associated Vasculitis in Japan: A Nationwide, Prospective Cohort Study

From the Department of Environmental and Preventive Medicine, and Department of Nephrology and Laboratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa; Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama; Department of Rheumatology and Clinical Immunology, Saitama Medical Center, Saitama; Division of Endocrinology and Metabolism, Hematology, Rheumatology and Respiratory Medicine, Department of Internal Medicine, Faculty of Medicine, Kagawa University, Kagawa; Division of Rheumatology and Allergology, Departments of Internal Medicine and Dermatology, St. Marianna University School of Medicine, Kawasaki; Department of Hematology, Clinical Immunology and Infectious Diseases, Ehime University Graduate School of Medicine, Matsuyama; Department of Rheumatology, Faculty of Medicine, University of Tsukuba, Tsukuba; Department of Hemovascular Medicine and Artificial Organs, Faculty of Medicine, University of Miyazaki, Miyazaki; Center for Nephrology and Urology, Division of Nephrology and Dialysis, Kitano Hospital, Tazuke Kofukai Medical Research Institute, Osaka; Third Department of Internal Medicine, Division of Immunology and Rheumatology, Hamamatsu University School of Medicine, Hamamatsu; Division of Rheumatology, Niigata Rheumatic Center, Shibata; Department of Pharmacovigilance, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University; Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine; Department of Respiratory Medicine, Toho University Omori Medical Center; Division of Nephrology, Tokyo Medical University Hachioji Medical Center; Department of Nephrology and Endocrinology, Graduate School of Medicine, The University of Tokyo; Nephrology and Rheumatology, First Department of Internal Medicine, Kyorin University School of Medicine, Tokyo, Japan.