RT Journal Article SR Electronic T1 Sexual behaviour change in countries with generalised HIV epidemics? Evidence from population-based cohort studies in sub-Saharan Africa JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP i1 OP i2 DO 10.1136/sti.2009.036053 VO 85 IS Suppl 1 A1 Simon Gregson A1 Jim Todd A1 Basia Żaba YR 2009 UL http://sti.bmj.com/content/85/Suppl_1/i1.abstract AB