Squamous cell carcinoma of the anus	SCCA
Human Papilloma Virus	HPV
low grade squamous intraepithelial lesions	LSIL
high grade squamous intraepithelial lesions	HSIL
men having sex with men	MSM
randomized controlled trial	RCT
highly active anti-retroviral therapy	HAART
high resolution anoscopy	HRA
nucleoside reverse transcriptase inhibitors	NRTI
integrase strand transfer inhibitors	INSTI
non nucleoside reverse transcriptase inhibitors	NNRTI
protease inhibitors	PI