Home » Resources Library » Marra E, et al. Virological and Serological Predictors of Anal High-grade Squamous Intraepithelial Lesions Among Human Immunodeficiency Virus-positive Men Who Have Sex With Men. Created: Oct 2023 Marra E, et al. Virological and Serological Predictors of Anal High-grade Squamous Intraepithelial Lesions Among Human Immunodeficiency Virus-positive Men Who Have Sex With Men.