| 1. | 
				                                                                				                                                                       
				                                                                        Ayoub WS, Esquivel CO, Martin P. Biliary complications follo-wing liver transplantation[J]. Dig Dis Sci, 2010, 55(6):1540-1546.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 2. | 
				                                                                				                                                                       
				                                                                        Thethy S, Thomson B, Pleass H, et al. Management of biliary tract complications after orthotopic liver transplantation[J]. Clin Transplant, 2004, 18(6):647-653.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 3. | 
				                                                                				                                                                       
				                                                                        Hampe T, Dogan A, Encke J, et al. Biliary complications after liver transplantation[J]. Clin Transplant, 2006, 20 Suppl 17:93-96.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 4. | 
				                                                                				                                                                       
				                                                                        Kochhar G, Parungao JM, Hanouneh IA, et al. Biliary complications following liver transplantation[J]. World J Gastroenterol, 2013, 19(19):2841-2846.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 5. | 
				                                                                				                                                                       
				                                                                        Seehofer D, Eurich D, Veltzke-Schlieker W, et al. Biliary comp-lications after liver transplantation:old problems and new challen-ges[J]. Am J Transplant, 2013, 13(2):253-265.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 6. | 
				                                                                				                                                                       
				                                                                        Abbasoglu O, Levy MF, Vodapally MS, et al. Hepatic artery stenosis after liver transplantation-incidence, presentation, treatment, and long term outcome[J]. Transplantation, 1997, 63(2):250-255.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 7. | 
				                                                                				                                                                       
				                                                                        Krishna M, Keaveny AP, Genco PV, et al. Clinicopathological review of 18 cases of liver allografts lost due to bile duct necrosis[J]. Transplant Proc, 2005, 37(5):2221-2223.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 8. | 
				                                                                				                                                                       
				                                                                        Orons PD, Sheng R, Zajko AB. Hepatic artery stenosis in liver transplant recipients:prevalence and cholangiographic appearance of associated biliary complications[J]. AJR Am J Roentgenol, 1995, 165(5):1145-1149.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 9. | 
				                                                                				                                                                       
				                                                                        Sheng R, Campbell WL, Zajko AB, et al. Cholangiographic features of biliary strictures after liver transplantation for primary sclerosing cholangitis:evidence of recurrent disease[J]. AJR Am J Roentgenol, 1996, 166(5):1109-1113.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 10. | 
				                                                                				                                                                       
				                                                                        Arain MA, Attam R, Freeman ML. Advances in endoscopic mana-gement of biliary tract complications after liver transplantation[J]. Liver Transpl, 2013, 19(5):482-498.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 11. | 
				                                                                				                                                                       
				                                                                        Tse F, Yuan Y, Moayyedi P, et al. Guide wire-assisted cannulation for the prevention of post-ERCP pancreatitis:a systematic review and meta-analysis[J]. Endoscopy, 2013, 45(8):605-618.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 12. | 
				                                                                				                                                                       
				                                                                        Girometti R, Cereser L, Como G, et al. Biliary complications after orthotopic liver transplantation:MRCP findings[J]. Abdom Imaging, 2008, 33(5):542-554.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 13. | 
				                                                                				                                                                       
				                                                                        Boraschi P, Donati F, Gigoni R, et al. MR cholangiography in orthotopic liver transplantation:sensitivity and specificity in detec-ting biliary complications[J]. Clin Transplant, 2010, 24(4):E82-87.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 14. | 
				                                                                				                                                                       
				                                                                        Hekimoglu K, Ustundag Y, Dusak A, et al. MRCP vs. ERCP in the evaluation of biliary pathologies:review of current literature[J]. J Dig Dis, 2008, 9(3):162-169.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 15. | 
				                                                                				                                                                       
				                                                                        Whiting P, Rutjes AW, Dinnes J, et al. Development and valida-tion of methods for assessing the quality of diagnostic accuracy studies[J]. Health Technol Assess, 2004, 8(25):iii, 1-234.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 16. | 
				                                                                				                                                                       
				                                                                        Zamora J, Abraira V, Muriel A, et al. Meta-DiSc:a software for meta-analysis of test accuracy data[J]. BMC Med Res Methodol, 2006, 6:31.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 17. | 
				                                                                				                                                                       
				                                                                        Beswick DM, Miraglia R, Caruso S, et al. The role of ultrasound and magnetic resonance cholangiopancreatography for the diagnosis of biliary stricture after liver transplantation[J]. Eur J Radiol, 2012, 81(9):2089-2092.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 18. | 
				                                                                				                                                                       
				                                                                        Pecchi A, De Santis M, Gibertini MC, et al. Role of magnetic resonance imaging in the detection of anastomotic biliary strictures after liver transplantation[J]. Transplant Proc, 2011, 43(4):1132-1135.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 19. | 
				                                                                				                                                                       
				                                                                        Kinner S, Dechene A, Paul A, et al. Detection of biliary stenoses in patients after liver transplantation:is there a different diagnostic accuracy of MRCP depending on the type of biliary anastomosis?[J]. Eur J Radiol, 2011, 80(2):e20-e28.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 20. | 
				                                                                				                                                                       
				                                                                        Kitazono MT, Qayyum A, Yeh BM, et al. Magnetic resonance cholangiography of biliary strictures after liver transplantation:a prospective double-blind study[J]. J Magn Reson Imaging, 2007, 25(6):1168-1173.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 21. | 
				                                                                				                                                                       
				                                                                        Fulcher AS, Turner MA. Orthotopic liver transplantation:evaluation with MR cholangiography[J]. Radiology, 1999, 211(3):715-722.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 22. | 
				                                                                				                                                                       
				                                                                        Laghi A, Pavone P, Catalano C, et al. MR cholangiography of late biliary complications after liver transplantation[J]. AJR Am J Roentgenol, 1999, 172(6):1541-1546.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 23. | 
				                                                                				                                                                       
				                                                                        Bismpa K, Zlika S, Fouzas I, et al. Imaging of complications of liver transplantation:multidetector computed tomography findings[J]. Transplant Proc, 2012, 44(9):2751-2753.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 24. | 
				                                                                				                                                                       
				                                                                        Romagnuolo J, Bardou M, Rahme E, et al. Magnetic resonance cholangiopancreatography:a meta-analysis of test performance in suspected biliary disease[J]. Ann Intern Med, 2003, 139(7):547-557.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 25. | 
				                                                                				                                                                       
				                                                                        Kaltenthaler EC, Walters SJ, Chilcott J, et al. MRCP compared to diagnostic ERCP for diagnosis when biliary obstruction is susp-ected:a systematic review[J]. BMC Med Imaging, 2006, 6:9.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 26. | 
				                                                                				                                                                       
				                                                                        Jorgensen JE, Waljee AK, Volk ML, et al. Is MRCP equivalent to ERCP for diagnosing biliary obstruction in orthotopic liver transplant recipients? A meta-analysis[J]. Gastrointest Endosc, 2011, 73(5):955-962.
				                                                                 | 
				                                                            
				                                                        
				                                                            
				                                                                | 27. | 
				                                                                				                                                                       
				                                                                        Xu YB, Min ZG, Jiang HX, et al. Diagnostic value of magnetic resonance cholangiopancreatography for biliary complications in orthotopic liver transplantation:a meta-analysis[J]. Transplant Proc, 2013, 45(6):2341-2346.
				                                                                 |