1. Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine Saga University Saga Japan
2. Department of Clinical Laboratory Medicine, Faculty of Medicine Saga University Saga Japan
3. Division of Respiratory Medicine Saga‐Ken Medical Centre Koseikan Saga Japan
4. Department of Respiratory Medicine Karatsu Red Cross Hospital Saga Japan
5. Education and Research Center for Community Medicine, Faculty of Medicine Saga University Saga Japan