Related by context. Frequent words. (Click for all words.) 69 unprotected anal sex 63 anal intercourse 60 penetrative sex 58 vaginal secretions 57 unprotected sexual intercourse 56 valacyclovir 56 coinfected 56 sexual intercourse 56 intercourse 56 vaginal intercourse 55 MSMs 55 heterosexual intercourse 55 seropositive 55 unprotected intercourse 54 Nothing vulgar obscene 54 causes genital warts 54 genital tract 54 heterosexual 54 consenting adult 53 uncircumcised men 53 Genital herpes 53 sexually transmitted infections 53 HPV# 53 sexually transmitted infection 53 bacterial vaginosis 53 unprotected sex 53 undetectable viral load 52 sexually active 52 HCV genotype 1 52 IDUs 52 HIV infection 52 sex 52 Chlamydia trachomatis 52 seroconversion 52 anal sex 51 sexual 51 mutual masturbation 51 monogamous relationships 51 % CI #.#-#.# [006] 51 CD4 + cell 51 PCA3 51 decreased libido 51 LUTS 51 virologic failure 50 antisocial behaviors 50 heterosexual males 50 STDs 50 estrogen receptor ER 50 sexually transmitted infections STIs 50 nelfinavir 50 HCV infected 50 genital herpes 50 Heterosexual 50 saquinavir 50 confidence interval #.#-#.# 50 pre exposure prophylaxis 50 sexually transmitted 50 STIs 49 serum concentrations 49 hormonal contraception 49 subgroup analyzes 49 vaginal infections 49 sexually transmitted diseases 49 pledgers 49 chronic HCV infection 49 acquired immunodeficiency syndrome 49 PCa 49 copies ml 49 hepatitis C HCV 49 NNRTIs 49 antibody titers 49 HIV 49 laboratory abnormalities 49 abstinent 49 leukopenia 49 covariates 49 BRCA2 mutations 49 chronic HBV infection 49 bisexual 49 vaginal cancers 49 viremia 48 X Excite 48 acamprosate 48 human immunodeficiency virus 48 tenofovir gel 48 NRTI 48 HCV infection 48 females 48 contaminated needles 48 HBV DNA 48 anal penetration 48 transcriptase inhibitor NNRTI 48 heterosexuals 48 sexually promiscuous 48 confidence interval CI 48 oropharyngeal cancer 48 deviate sexual intercourse 48 ejaculate 48 endometrial cancers 48 events SAEs 48 BRCA mutations