BibTex format
@article{Walker:2004:10.1016/S0140-6736(04)16511-2,
author = {Walker, N and Grassly, NC and Garnett, GP and Stanecki, KA and Ghys, PD},
doi = {10.1016/S0140-6736(04)16511-2},
journal = {LANCET},
pages = {2180--2185},
title = {Estimating the global burden of HIV/AIDS: what do we really know about the HIV pandemic?},
url = {http://dx.doi.org/10.1016/S0140-6736(04)16511-2},
volume = {363},
year = {2004}
}