Optimal intra-ampullary orientation with a pretrained sphincterotome.
Seibert
D G
DG
Dept Med, Robert C. Byrd Health Sciences Center, Morgantown, WV 26506-9161, USA.
Matulis
S R
SR
D002760:Cholangiopancreatography, Endoscopic Retrograde; D006801:Humans; D016717:Sphincterotomy, Endoscopic / Q000295:instrumentation*