1 Department of Respiratory Medicine, Tokyo Medical University Hospital, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, Japan. Electronic address: reo1129@tokyo-med.ac.jp.
2 Department of Respiratory Medicine, Tokyo Medical University Hospital, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, Japan.
3 Department of Clinical Oncology, Tokyo Medical University Hospital, Tokyo, Japan.