THE BEST SIDE OF MATURE

Interest in anal intercourse has also come from study in human immunodeficiency virus (HIV) transmission. Many studies have quantified the greater risk of heterosexual transmission from a single act of anal intercourse in comparison with just one act of vaginal intercourse (Boily et al., 2009; Leynaert, Downs, & de Vincenzi, 1998; Powers, Poole, Pe