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Kocher, Agnes; Ndosi, Mwidimi; Denhaerynck, Kris; Simon, Michael; Dwyer, Andrew A; Distler, Oliver; Hoeper, Kirsten; Künzler-Heule, Patrizia; Redmond, Anthony C; Villiger, Peter M.; Walker, Ulrich A; Nicca, Dunja (2021). A rare disease patient-reported outcome measure: revision and validation of the German version of the Systemic Sclerosis Quality of Life Questionnaire (SScQoL) using the Rasch model. Orphanet journal of rare diseases, 16(1), p. 356. BioMed Central 10.1186/s13023-021-01944-9
