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Cited by in CrossRef
For: Appleyard MN, Swain CP. Endoscopic difficulties in the diagnosis of upper gastrointestinal bleeding. World J Gastroenterol 2001; 7(3): 308-312 [PMID: 11819781 DOI: 10.3748/wjg.v7.i3.308]
URL: https://www.wjgnet.com/1007-9327/full/v7/i3/308.htm
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