Corresponding Author

Department of Respiratory Medicine, Kobe City Medical Center General Hospital, Kobe, Japan

Correspondence

Kazuma Nagata, Department of Respiratory Medicine, Kobe City Medical Center General Hospital, 2-1-1 Minatojima Minamimachi, Chuo-ku, Kobe, 650-0047 Hyogo, Japan.

Email: kazuma_n1101@yahoo.co.jp

Contribution: Conceptualization (lead), Formal analysis (equal), Methodology (lead), Resources (equal), Supervision (lead), Writing - original draft (lead), Writing - review & editing (lead)