RT Journal Article SR Electronic T1 The male genitalia: a clinician’s guide to skin problems and sexually transmitted infections JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 156 OP 156 DO 10.1136/sti.2008.035485 VO 85 IS 2 A1 E Edmonds YR 2009 UL http://sti.bmj.com/content/85/2/156.abstract AB