1. Department of Medicine, Chiba University, Chiba, Japan
2. Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, Japan
3. Medical Affairs Division, Chugai Pharmaceutical Co., Ltd., Tokyo, Japan
4. Department of Radiology, Chiba University Hospital, Chiba, Japan
5. Department of General Thoracic Surgery, Tokyo Women’s Medical University Yachiyo Medical Center, Yachiyo, Chiba, Japan