“Endoscopic Biliary Darinage (EBD) Versus Percutaneous Transhepatic Biliary Drainage (PTBD) for Biliary Drainage in Patients With Perihilar Cholangiocarcinoma (PCCA): A Systematic Review and Meta-Analysis”. 2023. Clinics 78 (January): 100163. https://doi.org/10.1016/j.clinsp.2022.100163.