Biliary drainage in patients with unresectable, malignant obstruction where ERCP fails: endoscopic ultrasonography-guided choledochoduodenostomy versus percutaneous drainage - Artifon, Everson L. A; Aparicio, Dayse; Paione, José B; Lo, Simon K; Bordini, Andre; Rabello, Carolina; Otoch, José Pinhata; Grupta, Kapil (Journal of Clinical Gastroenterology, 2012)