Prospective Study
Copyright ©The Author(s) 2016.
World J Crit Care Med. May 4, 2016; 5(2): 150-164
Published online May 4, 2016. doi: 10.5492/wjccm.v5.i2.150
Figure 2
Figure 2 The Preferred Reporting Items for Systematic Reviews and Meta-analyses flow diagram. The information flow in the different phases of the systematic review is presented. The first search through the data bases returned 501 studies, or 487 after the duplicates were removed. A total of 118 studies were screened based on the abstract and title and 18 full text articles were reviewed. Among them 14 studies were included in the meta-analysis.