548 NARROW BAND IMAGING ENDOSCOPY VERSUS LUGOL CHROMOENDOSCOPY IN SCREENING FOR ESOPHAGEAL CANCER AMONG PATIENTS WITH HEAD AND NECK CANCERS: A RANDOMIZED TRIAL
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2008 ◽
Vol 118
(10)
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pp. 1787-1790
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2009 ◽
Vol 104
(12)
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pp. 2942-2948
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