1. Volume 379, Issue 9821, Pages 1120-1128 (March 2012)
Prevention of sexually transmitted infections in urban communities (Peru PREVEN): a multicomponent community-randomised controlled trial 
Prof Patricia J García, PhD, Prof, Dr King K Holmes, PhD, César P Cárcamo, PhD, Prof Geoff P Garnett, PhD, Prof James P Hughes, PhD, Pablo E Campos, MD, William LH Whittington, BA 
The Lancet 
Volume 379, Issue 9821, Pages (March 2012)
DOI: /S (11)
Copyright © 2012 Elsevier Ltd Terms and Conditions

2. Figure 1
Study profile
The Lancet  , DOI: ( /S (11) )
Copyright © 2012 Elsevier Ltd Terms and Conditions

3. Figure 2
20 cities selected for pair-wise randomisation to intervention and control groups
Circle sizes are proportionate to population sizes, which ranged from 50 183 to 291 408. Total population size in intervention cities was 1 465 127, and in control cities 1 454 348. Lines connect city pairs.
The Lancet  , DOI: ( /S (11) )
Copyright © 2012 Elsevier Ltd Terms and Conditions