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Article Citation
Müller M, Gockel I, Hedwig P, Eckardt AJ, Kuhr K, König J, Eckardt VF. Is the schatzki ring a unique esophageal entity? World J Gastroenterol 2011; 17(23): 2838-2843 [PMID: 21734791 DOI: 10.3748/wjg.v17.i23.2838]
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