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Reichenbach, Stephan; Jüni, Peter; Nüesch, Eveline; Frey, Franz; Ganz, Reinhold; Leunig, Michael (2010). An examination chair to measure internal rotation of the hip in routine settings: a validation study. Osteoarthritis and cartilage, 18(3), pp. 365-371. Amsterdam: Elsevier 10.1016/j.joca.2009.10.001
