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Video echoendoscopy in the United States.
Chak A, Isenberg G, Mallery S, VanDam J, Cooper GS, Sivak MV Jr. Chak A, et al. Endoscopy. 1998 Aug;30 Suppl 1:A135-7. doi: 10.1055/s-2007-1001495. Endoscopy. 1998. PMID: 9765106 No abstract available.
Prospective comparative evaluation of video US endoscope.
Chak A, Isenberg G, Mallery S, Van Dam J, Cooper GS, Sivak MV Jr. Chak A, et al. Gastrointest Endosc. 1999 Jun;49(6):695-9. doi: 10.1016/s0016-5107(99)70284-1. Gastrointest Endosc. 1999. PMID: 10343211 Clinical Trial.
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