Figure 1.

Cervical cancer cases and related HPV infections. (a) Only HPV types counted as single infections are included. Every cervical cancer case is attributable to solely one HPV type. Cases with multiple HR-HPV infections were proportionally distributed as described in the methods section. (b) Only HR-HPV types are included. HR-LR HPV coinfections (30.6% of multiple infections) were assumed as single infections for the carcinogenic process. *LR-HPV type with single infections as described in Table 2. **HR-HPV types observed exclusively in multiple infections.