RT Journal Article SR Electronic T1 Human Sexuality and its Problems JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 370 OP 370 DO 10.1136/sti.2010.044818 VO 86 IS 5 A1 de Visser, Richard O YR 2010 UL http://sti.bmj.com/content/86/5/370.abstract AB