1. Department of Hematology, Oncology and Respiratory Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Japan
2. Department of Pathology, Okayama University Hospital, Japan
3. Department of Bioscience Medical Research Center, Niigata University Medical & Dental Hospital, Japan
4. Department of Allergy and Respiratory Medicine, Okayama University Hospital, Japan