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Schönfeld N, Dirks K, Costabel U, Loddenkemper R; Wissenschaftliche Arbeitsgemeinschaft für die Therapie von Lungenkrankheiten.Schönfeld N, et al.Sarcoidosis Vasc Diffuse Lung Dis. 2012 Oct;29(2):132-8.Sarcoidosis Vasc Diffuse Lung Dis. 2012.PMID: 23461076Clinical Trial.