Evaluating the home-based intervention strategy (HIS-UK) to reduce new chlamydia infection among young men aged 16–25 years by promoting correct and consistent condom use: findings... by Stone, N, Graham, C, Bremner, S, McGrath, N, Bedford, R, Brown, KE, Newby, K, Clarke, A, Jackson, L, Morrison, L, Nadarzynski, T, To, Y