Related by context. Frequent words. (Click for all words.) 51 hormone binding globulin 50 penetrative sex 49 Sexual intercourse 49 vaginal penetration 47 intercourse 47 vaginal secretions 46 homosexual intercourse 46 serum concentrations 46 genital tract 46 Sexually active 46 discordant couples 45 unprotected anal sex 44 glans 44 heterosexual intercourse 43 sexual intercourse 43 vaginal intercourse 43 ejaculations 43 anal intercourse 42 sexology 42 dyspareunia 42 pederasty 42 mutual masturbation 42 oestradiol 42 ascending doses 42 researcher Alfred Kinsey 42 serum testosterone 42 Secondary endpoints include 42 deviate sexual intercourse 41 multivariate analyzes 41 p = .# [002] 41 seroconversion 41 nonobese 41 fibroblast 41 Nothing vulgar obscene 41 cunnilingus 41 coitus 41 Promiscuity 41 condom usage 41 unprotected sexual intercourse 40 seropositive 40 sociodemographic 40 uncircumcised men 40 prospective cohort 40 cardiorespiratory fitness 40 heterosexual 40 arousals 40 sex 40 heterosexual males 40 % CI #.#-#.# [003] 40 Cmax 40 anal sex 40 consenting adult 40 laboratory abnormalities 40 engorgement 39 Heterosexual 39 pharmacokinetics PK 39 eroticized 39 Sexuality 39 platelet activation 39 sexual encounters 39 foci 39 subtests 39 analgesic efficacy 39 transvestism 39 external genitalia 39 anal penetration 39 arousal 39 coital 39 luteal phase 39 sexologists 38 Male circumcision 38 prospectively defined 38 Ghrelin 38 anal rape 38 Subgroups 38 Unprotected sex 38 autistic traits 38 Genital herpes 38 covariate 38 LUTS 38 subjects 38 cohabited 38 pro inflammatory cytokine 38 normotensive 38 genital organs 38 pharmacodynamic effects 38 prairie voles 38 fasting insulin 38 monogamous relationships 38 sexual arousal 38 Subjects 38 asexuality 38 copulation 38 nonsexual 38 confidence interval CI 38 oral herpes 38 sexualities 38 mg d 37 eroticism 37 blinded placebo controlled 37 nerve sparing