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Ziswiler, HR; urech, R; Balmer J.Oestensen, M; Mierau, R; Villiger, PM (2007). Clinical diagnosis compared to classification criteria in a cohort of 54 patients with systemic sclerosis and associated disorders. Swiss medical weekly, -137(41-42), pp. 586-90. Muttenz: EMH Schweizerischer Ärzteverlag
