@article{de Silva2012,
author = {de Silva, T. and Leligdowicz, A. and Rowland-Jones, S.},
title= {Effect of HIV-2 infection on HIV-1 disease progression},
year = {2012},
journal = {N Engl J Med},
volume = {367},
number = {20},
pages = {1961−1962; author reply 1962−1963},
}