Fig. 1From: Survival benefit of hepatic resection versus transarterial chemoembolization for hepatocellular carcinoma with portal vein tumor thrombus: a systematic review and meta-analysisPRISMA flow diagram of the process used to identify eligible studies. CNKI: Chinese National Knowledge Infrastructure; VIP: Chongqing VIP Database for Chinese Technical Periodicals; Wan Fang: Wan Fang Database; Sino Med: Chinese Biological Medical Literature DatabaseBack to article page