BibTex format
@article{Grassly:2001,
author = {Grassly, NC and Garnett, GP and Schwartländer, B and Gregson, S and Anderson, RM},
journal = {BULLETIN OF THE WORLD HEALTH ORGANIZATION},
pages = {1121--1132},
title = {The effectiveness of HIV prevention and the epidemiological context},
volume = {79},
year = {2001}
}