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Ferguson GT, Karpel J, Bennett N, Clerisme-Beaty E, Grönke L, Voß F, Buhl R.Ferguson GT, et al.NPJ Prim Care Respir Med. 2017 Feb 2;27(1):7. doi: 10.1038/s41533-016-0002-x.NPJ Prim Care Respir Med. 2017.PMID: 28154373Free PMC article.Clinical Trial.
Ferguson GT, Maltais F, Karpel J, Bothner U, Kloer I, Trampisch M, Buhl R.Ferguson GT, et al.NPJ Prim Care Respir Med. 2020 Dec 4;30(1):53. doi: 10.1038/s41533-020-00212-w.NPJ Prim Care Respir Med. 2020.PMID: 33277507Free PMC article.Clinical Trial.