RT Journal Article SR Electronic T1 Review: similar social factors influence young people’s sexual behaviour worldwide JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 124 OP 124 DO 10.1136/ebn.10.4.124 VO 10 IS 4 YR 2007 UL http://ebn.bmj.com/content/10/4/124.abstract AB