Fig. 1
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40880-018-0293-0/MediaObjects/40880_2018_293_Fig1_HTML.gif)
Flow chart for the study on patients with advanced gastric cancer according to inclusion and exclusion criteria in the SYSUCC, CMU, and TJMU, respectively. SYSUCC Sun Yat-sen University Cancer Center; CMU Chinese Medical University; TJMU Tianjin Medical University