Fig. 1From: A meta-analysis and trial sequential analysis of randomised controlled trials comparing nonoperative and operative management of chest trauma with multiple rib fracturesPRISMA flow chart of study screening and selection. The search strategy in MEDLINE, Scopus, and Cochrane Central Registry of Controlled study yielded 580 studies. We reviewed 20 studies for inclusion and exclusion criteria and finally included 9 studies in the meta-analysisBack to article page