Ayaz, Ercan, and Murat Aşık. “Endobiliary Radiofrequency Ablation and Percutaneous Biliary Stent Placement for Choledocal Invasion of Renal Cell Carcinoma”. Turkish Journal of Gastroenterology, vol. 30, no. 9, Jan. 2019, pp. 854-7, doi:10.5152/tjg.2019.18745.