2Freeman ML,Guda NM. ERCP cannulation: a review of reported techniques. Gastrointest Endosc ,2005,61 : 112-125.
3Cotton PB, Lehman G, Vennes J,et al. Endoscopic sphineterotomy complications and their management: an attempt at consensus. Gastrointest Endosc, 1991,37:383-393.
4Freeman ML,Guda NM. Prevention of post-ERCP pancreatitis: a comprehensive review. Gastrointest Endosc, 2004,59:845-864.
5Mallery JS, Baron TH, Dominitz JA, et al. Complications of ERCP. Gastrointest Endosc ,2003,57:633-638.
6Dumonceau JM, Deviere J, Cremer M. A new method of achieving deep cannulation of the common bile duct during endoscopic retrograde cholangiopancreatography. Endoscopy, 1998,30 : S80.