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											 Original Article											 
											Acid Secretion From a Heterotopic Gastric Mucosa in the Upper Esophagus Demonstrated by Dual Probe 24 - hour Ambulatory pH Monitoring
											
																								
												Eun A Kim, Dong Hoon Kang, Hae Seok Cho, Dong Kyun Park, Yu Kyung Kim, Hyun Chul Park, Ju Hyun Kim 
												
												Korean J Intern Med. 2001;16(1):14-17.   Published online March 1, 2001												 
																										
												
												
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