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  Indian J Med Microbiol
 

Figure 4: Subgroup analysis of the risk difference between HPV and penile cancer in recent years in Brazil. HPV: human papillomavirus; CI: confidenceinterval; SE: standard error; IV: inverse variance methods; df: degree of freedom.

Figure 4: Subgroup analysis of the risk difference between HPV and penile cancer in recent years in Brazil. HPV: human papillomavirus; CI: confidenceinterval; SE: standard error; IV: inverse variance methods; df: degree of freedom.