1. HEPATITIS C Sexual transmission in hepatitis C infection is uncommon.93 94 Transmission is linked to the presence of both hepatitis B and HIV which may act as cofactors, and a slightly higher prevalence of infection has been reported in homosexual men in one study.95 Receptive orogenital contact with more than 25 partners was marginally associated with infection (OR 2.4), with a similar association with more than 50 partners per year (OR 2.1) and more than 25 anal receptive partners
2. Sexual attitudes and lifestyles;Johnson, A.M.; Wadsworth, J.; Wellings, K.; Field, J.,1994
3. Sexual behaviour in the human male;Kinsey, A.C.; Pomeroy, W.B.; Martin, C.E.,1948
4. Sexual behaviour in the human female;Kinsey, A.C.; Pomeroy, W.B.; Martin, C.E.; Gebhard, P.H.,1953
5. The sexual scripting of oral genital contacts;Gagnon, J.H.; Simon, W.;Arch Sex Behav,1987