HIV Infections Human immunodeficiency virus infection 145 Humans 145 human 145 male 102 female 101 adult 100 Female 92 Male 91 Adult 84 HIV 65 major clinical study 53 middle aged 51 Middle Aged 50 Article 49 controlled study 47 psychology 46 Human immunodeficiency virus 43 Young Adult 41 young adult 41 adolescent 40 Adolescent 38 nonhuman 37 article 34 anti human immunodeficiency virus agent 32 Anti-HIV Agents 29 cohort analysis 26 complication 26 sexual behavior 23 Homosexuality, Male 21