1. Listening to youth;Hacker;J Adolesc Health,2000
2. Sexual activity and contraceptive practices among teenagers in the United States, 1988 and 1995;Abma;Vital Health Stat,2001
3. Sexual behaviour in Britain;Wellings;Lancet,2001
4. The birds and the bees;Simanski;Adolescence,1998
5. Women’s knowledge of and attitudes to contraceptive effectiveness and adverse health effects;Edwards;Br J Fam Plan,2000