@article{Weinhardt1999,
author = {Weinhardt, L.S. and Carey, M.P. and Johnson, B.T.  and Bickham, N.L. },
title= {Effects of HIV counseling and testing on sexual risk behavior: a meta-analytic review of published research, 1985-1997},
year = {1999},
doi = {10.2105/AJPH.89.9.1397},
journal = {American Journal of Public Health},
volume = {89},
number = {9},
pages = {1397--1405},
}