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Algorithm: Study design and outcomes. The number of cases of high grade disease (CIN 2+) diagnosed on histology in each arm is shown in the shaded boxes. VIA, visual inspection with acetic acid; VILI, visual inspection with Lugol's iodine; CIN, cervical intraepithelial neoplasia; ASCUS, atypical squamous cells of undetermined significance; LSIL, low-grade squamous intraepithelial lesion; HSIL, high-grade squamous intraepithelial lesion.
