Zu, Qing-Quan, et al. “Percutaneous Transpapillary Biliary Stent Placement for Distal Malignant Biliary Obstruction: Outcomes and Survival Analysis”. Turkish Journal of Gastroenterology, vol. 30, no. 8, Jan. 2019, pp. 714-21, doi:10.5152/tjg.2019.18317.