Polymyxin B-immobilised fibre column treatment for acute exacerbation of idiopathic pulmonary fibrosis patients with mechanical ventilation: a nationwide observational study.

"Declarations Ethics approval and consent to participateThis study was approved by the institutional review board of The University of Tokyo (Approval number: 3501). The need for informed consent was waived because anonymised data were used. Consent for publicationNot applicable. Competing interestsHY reports receiving grants from the Ministry of Health, Labour and Welfare, Japan and the Ministry of Education, Culture, Sports, Science and Technology, Japan during the conduct of the study. All other authors declare that they have no competing interests. Competing interests HY reports receiving grants from the Ministry of Health, Labour and Welfare, Japan and the Ministry of Education, Culture, Sports, Science and Technology, Japan during the conduct of the study. All other authors declare that they have no competing interests."

"Funding This study was supported by grants from the Ministry of Health, Labour and Welfare, Japan (21AA2007 and 20AA2005) and a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology, Japan (20H03907). The funding bodies had no role in the study design; data collection, analysis, or interpretation of the data; or writing of the manuscript."