@article{Parsons2005,
author = {Parsons, J.T. and Schrimshaw, E.W. and Wolitski, R.J. and Halkitis, P.N. and Purcell, D.W. and Hoff, C.C. and Gomez, C.A. },
title= {Sexual harm reduction practices of HIV-seropositive gay and bisexual men: serosorting, strategic positioning, and withdrawal before ejaculation},
year = {2005},
doi = {10.1097/01.aids.0000167348.15750.9a},
journal = {AIDS},
volume = {19},
number = {Supplement 1},
pages = {S13−25},
}