Balloon-occluded retrograde transvenous obliteration (BRTO) versus transjugular intrahepatic portosystemic shunt (TIPS) for treatment of gastric varices because of portal hypertension: a systematic review and meta-analysis - Paleti, S; Nutalapati, V; Fathallah, J; Jeepalyam, S; Rustagi, T (J Clin Gastroenterol, 2020)