Fig. 1From: Efficacy of permissive underfeeding for critically ill patients: an updated systematic review and trial sequential meta-analysisFlowchart of literature search and screening process. *Name of database and number of studies searched: PubMed (n = 654); Embase (n = 969); Web of Science (n = 58); Cochrane Library (n = 840); SinoMed (n = 167); CNKI (n = 5); WANFANG Data (n = 15)Back to article page