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Gastroenterology
Volume 135, Issue 3
, Page
723
, September 2008
Balfour of the Balfour retractor
PII: S0016-5085(08)01452-2
doi: 10.1053/j.gastro.2008.07.077
« Previous
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Gastroenterology
Volume 135, Issue 3
, Page
723
, September 2008

