About the Authors

Eiki Ichihara

Roles Conceptualization, Data curation, Methodology, Writing – original draft, Writing – review & editing

ichiha-e@md.okayama-u.ac.jp

Affiliation Department of Allergy and Respiratory Medicine, Okayama University Hospital, Okayama, Japan

Kou Hasegawa

Roles Investigation, Writing – review & editing

Affiliation Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan

Kenichiro Kudo

Roles Investigation, Writing – review & editing

Affiliation Department of Respiratory Medicine, National Hospital Organization Okayama Medical Center, Okayama, Japan

Yasushi Tanimoto

Roles Investigation, Writing – review & editing

Affiliation Department of Allergy and Respiratory Medicine, National Hospital Organization Minami-Okayama Medical Center, Japan

Kazuhiro Nouso

Roles Investigation, Writing – review & editing

Affiliation Department of Gastroenterology, Okayama City Hospital, Okayama, Japan

Naohiro Oda

Roles Investigation, Writing – review & editing

Affiliation Department of Internal Medicine, Fukuyama City Hospital, Fukuyama, Japan

Sho Mitsumune

Roles Investigation, Writing – review & editing

Affiliation Department of Respiratory Medicine, National Hospital Organization Okayama Medical Center, Okayama, Japan

Haruto Yamada

Roles Investigation, Writing – review & editing

Affiliation Department of Infectious Disease, Okayama City Hospital, Okayama, Japan

Ichiro Takata

Roles Investigation, Writing – review & editing

Affiliation Department of Internal Medicine, Fukuyama City Hospital, Fukuyama, Japan

Hideharu Hagiya

Roles Investigation, Writing – review & editing

Affiliation Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan

Toshiharu Mitsuhashi

Roles Investigation, Methodology, Writing – review & editing

Affiliation Center for Innovative Clinical Medicine, Okayama University Hospital, Okayama, Japan

Akihiko Taniguchi

Roles Investigation, Writing – review & editing

Affiliation Department of Allergy and Respiratory Medicine, Okayama University Hospital, Okayama, Japan

Shinichi Toyooka

Roles Conceptualization, Writing – review & editing

Affiliation Department of General Thoracic Surgery and Breast and Endocrine Surgery, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan

Kohei Tsukahara

Roles Investigation, Writing – review & editing

Affiliation Department of Emergency, Critical Care and Disaster Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan

Toshiyuki Aokage

Roles Investigation, Writing – review & editing

Affiliation Department of Emergency, Critical Care and Disaster Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan

Hirokazu Tsukahara

Roles Conceptualization, Writing – review & editing

Affiliation Department of Pediatrics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan

Katsuyuki Kiura

Roles Supervision, Writing – review & editing

Affiliation Department of Allergy and Respiratory Medicine, Okayama University Hospital, Okayama, Japan

Yoshinobu Maeda

Roles Conceptualization, Supervision, Writing – review & editing

Affiliation Department of Hematology, Oncology and Respiratory Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan

Competing Interests

Hagiya H has received honoraria from Sawai Pharmaceutical. Nouso K, and Tsukahara H have received honoraria from Eisai Co. Maeda Y has received a research grant from Eisai Co. This does not alter our adherence to PLOS ONE policies on sharing data and materials.