共 2 条
[1]
A cluster randomized trial of a sex education programme in Be-lize,Central America. Alexandra Lynda Conboy Martiniuk,Kathleen Steel O’Connor,WillD King. International Journal of Epidemiology . 2003
[2]
School-based HIV pre-vention programmes for African youth. Melanie Gallant,Eleanor Maticka-Tyndale. Social Science and Medicine . 2004