1. Department of Respiratory Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
2. Department of Respiratory Medicine, Allergy and Clinical Immunology, Nagoya City University School of Medical Sciences, Nagoya, Japan
3. Division of Respiratory Medicine, Department of Internal Medicine, Nihon University, Tokyo, Japan
4. Respiratory Center, National Hospital Organization Tokyo National Hospital, Tokyo, Japan
5. Division of Medical Biochemistry, Department of Biomolecular Sciences, Saga Medical School, Saga, Japan
6. Shino-Test Corporation, Sagamihara, Japan
7. Department of Laboratory Medicine, Saga Medical School, Saga, Japan