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Urban M, Urban R, Krasowska I, Głowińska-Olszewska B, Stasiak-Barmuta A, Bossowski A, Koput A.Urban M, et al.Pediatr Endocrinol Diabetes Metab. 2008;14(2):71-5.Pediatr Endocrinol Diabetes Metab. 2008.PMID: 18721491Polish.