About the Authors

Kentaro Hyodo

Roles Data curation, Formal analysis, Writing – original draft

Affiliations Department of Pulmonary Medicine, University of Tsukuba, Ibaraki, Japan, Department of Respiratory Medicine, National Hospital Organization Ibaraki Higashi National Hospital, Ibaraki, Japan

Hironori Masuko

Roles Conceptualization, Formal analysis, Methodology, Validation, Writing – original draft, Writing – review & editing

hmasuko@md.tsukuba.ac.jp

Affiliation Department of Pulmonary Medicine, University of Tsukuba, Ibaraki, Japan

Hisayuki Oshima

Roles Data curation

Affiliation Department of Pulmonary Medicine, University of Tsukuba, Ibaraki, Japan

Rie Shigemasa

Roles Data curation, Formal analysis

Affiliation Department of Pulmonary Medicine, University of Tsukuba, Ibaraki, Japan

Haruna Kitazawa

Roles Conceptualization

Affiliation Department of Pulmonary Medicine, University of Tsukuba, Ibaraki, Japan

Jun Kanazawa

Roles Data curation

Affiliation Department of Respiratory Medicine, National Hospital Organization Ibaraki Higashi National Hospital, Ibaraki, Japan

Hiroaki Iijima

Roles Conceptualization, Data curation

Affiliation Department of Respiratory Medicine, Tsukuba Medical Center, Ibaraki, Japan

Hiroichi Ishikawa

Roles Data curation

Affiliation Department of Respiratory Medicine, Tsukuba Medical Center, Ibaraki, Japan

Takahide Kodama

Roles Data curation

Affiliation Department of Respiratory Medicine, Ryugasaki Saiseikai Hospital, Ibaraki, Japan

Akihiro Nomura

Roles Data curation

Affiliation Department of Respiratory Medicine, Ibaraki Seinan Medical Center Hospital, Ibaraki, Japan

Katsunori Kagohashi

Roles Data curation

Affiliation Department of Pulmonary Medicine, University of Tsukuba, Ibaraki, Japan

Hiroaki Satoh

Roles Data curation

Affiliation Department of Pulmonary Medicine, University of Tsukuba, Ibaraki, Japan

Takefumi Saito

Roles Data curation

Affiliation Department of Respiratory Medicine, National Hospital Organization Ibaraki Higashi National Hospital, Ibaraki, Japan

Tohru Sakamoto

Roles Conceptualization, Data curation, Supervision

Affiliation Department of Pulmonary Medicine, University of Tsukuba, Ibaraki, Japan

Nobuyuki Hizawa

Roles Conceptualization, Funding acquisition, Methodology, Supervision, Writing – review & editing

Affiliation Department of Pulmonary Medicine, University of Tsukuba, Ibaraki, Japan

Competing Interests

NH has received lecture fees and/or research funding from AstraZeneca, Boehringer Ingelheim, Daiichi-Sankyo, GlaxoSmithKline, MSD, Novartis, Ono Pharmaceutical, and Pfizer. HM has received lecture fees from AstraZeneca, GlaxoSmithKline. The rest of the authors have no conflicts of interest. This does not alter our adherence to PLOS ONE policies on sharing data and materials.