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Assessment of nutritional status and calcium intake in patients with chronic obstructive pulmonary diseaseGuchała-Niedoszyto, M.; Lejk, A.; Wójcicka, K.; Matheisel, M.; Sliwińska, A.; Konstańska, I.Damps-; Jassem, E.; Małgorzewicz, S. · Clinical Nutrition · 2018