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4 - Darragh TM, Colgan TJ, Cox JT et al. The Lower Anogenital Squamous Terminology Standardization Project for HPV-Associated Lesions: background and consensus recommendations from the College of American Pathologists and the American Society for Colposcopy and Cervical Pathology. Journal of lower genital tract disease. 2012;16(3):205-42 [link]