Fig. 1From: Clinicopathological and prognostic significance of heat shock protein 27 (HSP27) expression in non-small cell lung cancer: a systematic review and meta-analysisPRISMA flow diagram of the literature retrieval. HSP27, heat shock protein 27; NSCLC, non-small cell lung cancer; PRISMA, Preferred Reporting Items for Systematic Reviews and Meta-AnalysesBack to article page