“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”, Clinics, vol. 78, p. 100163, Jan. 2023, doi: 10.1016/j.clinsp.2022.100163.