Figure 1.

Distribution of anal cytological abnormalities among 299 HIV-uninfected MSM. Anal samples, collected with a Dracon swab and stored in PreservCyt, were used for liquid-based cytology to evaluate the presence of cytological abnormalities. These were classified following the Bethesda 2001 guidelines.

DonĂ  et al. BMC Cancer 2012 12:476   doi:10.1186/1471-2407-12-476
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