1. Department of Respiratory Medicine and Allergy, Tosei General Hospital, Seto, Japan
2. Division of Pulmonary Medicine, Department of Medicine, Jichi Medical University, Tochigi, Japan
3. Inflammation and Immunology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
4. Division of Rheumatology, Department of Internal Medicine, Tokai University School of Medicine, Isehara, Japan
5. Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
6. Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine, Tokyo, Japan