Fig. 1
From: The clinical significance of snail protein expression in gastric cancer: a meta-analysis
Studies identified with criteria for inclusion and exclusion. After reviewing the abstracts and titles of 183 studies, 173 of them were excluded. In detail, 49 studies were excluded due to repetition; 32 studies were due to non-human subjects; 7 studies were due to non-full-text; 14 studies were due to non-IHC study; 69 studies were due to missing control group; 2 studies were due to missing the snail positive rate. Eventually, 10 articles were collected