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PII: S0016-5085(02)00116-6
doi:10.1053/gast.2002.35130
© 2002 American Gastroenterological Association. Published by Elsevier Inc. All rights reserved.
PII: S0016-5085(02)00116-6
doi:10.1053/gast.2002.35130
© 2002 American Gastroenterological Association. Published by Elsevier Inc. All rights reserved.