TY - JOUR AU - Kubota, K; Sato, T; Kato, S TI - Needle-knife precut papillotomy with a small incision over a pancreatic stent improves the success rate and reduces the complication rate in difficult biliary cannulations JO - J Hepatobiliary Pancreat Sci VL - 20 PY - 2013 DO - 10.1007/s00534-012-0552-4 SP - 382 EP - 388 N1 - et al. ER -