TY - JOUR T1 - Pneumoretroperitoneum secondary to duodenal perforation after endoscopic retrograde cholangiopancreatography JF - Canadian Journal of Surgery JO - CAN J SURG SP - 68 LP - 69 VL - 52 IS - 1 AU - Jaime Ruiz-Tovar AU - Eduardo Lobo AU - Alfonso Sanjuanbenito AU - Enrique Martínez-Molina Y1 - 2009/02/01 UR - http://canjsurg.ca/content/52/1/68.abstract ER -