Establishing minimally important differences for cardiac MRI end-points in pulmonary arterial hypertension.

"Conflict of interest: A.J. Swift has received research grant funding from Janssen Pharmaceuticals, and consultancy fees from Janssen Pharmaceuticals and General Electric. D.G. Kiely has received grant funding from Ferrer and Janssen Pharmaceuticals, and speaker and consultancy fees and funding for travel from Acceleron, Altavant, Ferrer, Janssen, MSD and United Therapeutics. The other authors have no relationships relevant to the contents of this paper to disclose."

"Support statement: This research is partly funded by the National Institute for Health and Care Research (NIHR) Sheffield Biomedical Research Centre (NIHR203321). The views expressed are those of the author(s) and not necessarily those of the NIHR or the Department of Health and Social Care. The study was supported by NIHR grant AI_AWARD01706 and by the Wellcome Trust (grant numbers 215799/Z/19/Z and 205188/Z/16/Z to A.J. Swift). The funders did not have any role in the design and conduct of the study; in the collection, analysis, and interpretation of the data; or in the preparation, review and approval of the paper. Funding information for this article has been deposited with the Crossref Funder Registry."