Meta-Analysis
Copyright ©The Author(s) 2016.
World J Gastroenterol. Mar 14, 2016; 22(10): 3038-3051
Published online Mar 14, 2016. doi: 10.3748/wjg.v22.i10.3038
Figure 4
Figure 4 Forest plots of the hazard ratio for the association of hepatitis B virus infection with overall survival by subgroup analysis. A: By sample size; B: By tumor type; C: By study region; D: By mean age.