Systematic Reviews
Copyright ©The Author(s) 2015.
World J Meta-Anal. Apr 26, 2015; 3(2): 97-117
Published online Apr 26, 2015. doi: 10.13105/wjma.v3.i2.97
Figure 1
Figure 1 Standardized data extraction form. Scoring: For each of 33 items: +1 if numbered item is present, 0 if absent, or na (not applicable).