Drug injection and sexual mixing patterns of drug-using male sex workersWILLIAMS, Mark L; BOWEN, Anne M; TIMPSON, Sandra et al.Sexually transmitted diseases. 2003, Vol 30, Num 7, pp 571-574, issn 0148-5717, 4 p.Article

HIV risk among a sample of drug using male sex workersWILLIAMS, Mark L; TIMPSON, Sandra; KLOVDAL, Alden et al.AIDS (London). 2003, Vol 17, Num 9, pp 1402-1404, issn 0269-9370, 3 p.Article

An investigation of condom use by frequency of sexWILLIAMS, Mark; ROSS, Michael W; BOWEN, Anne M et al.Sexually transmitted infections. 2001, Vol 77, Num 6, pp 433-435, issn 1368-4973Article

Characteristics, drug use, and sex partners of a sample of male sex workersTIMPSON, Sandra C; ROSS, Michael W; WILLIAMS, Mark L et al.The American journal of drug and alcohol abuse. 2007, Vol 33, Num 1, pp 63-69, issn 0095-2990, 7 p.Article

Decisions to participate in research : views of underserved minority drug users with or at risk for HIVSLOMKA, Jacquelyn; RATLIFF, Eric A; MCCURDY, Sheryl A et al.AIDS Care (Print). 2008, Vol 20, Num 10, pp 1224-1232, issn 0954-0121, 9 p.Article

Perceptions of Risk in Research Participation Among Underserved Minority Drug UsersSLOMKA, Jacquelyn; RATLIFF, Eric A; MCCURDY, Sheryl et al.Substance use & misuse. 2008, Vol 43, Num 11, pp 1640-1652, issn 1082-6084, 13 p.Article

Perceptions of financial payment for research participation among African-American drug users in HIV studiesSLOMKA, Jacquelyn; MCCURDY, Sheryl; RATLIFF, Eric A et al.Journal of general internal medicine. 2007, Vol 22, Num 10, pp 1403-1409, issn 0884-8734, 7 p.Article

HIV prevention and street-based male sex workers : An evaluation of brief interventionsWILLIAMS, Mark L; BOWEN, Anne M; TIMPSON, Sandra C et al.AIDS education and prevention. 2006, Vol 18, Num 3, pp 204-215, issn 0899-9546, 12 p.Article

Psychological correlates of trading sex for money among African American crack cocaine smokersRISSER, Jan M. H; TIMPSON, Sandra C; MCCURDY, Sheryl A et al.The American journal of drug and alcohol abuse. 2006, Vol 32, Num 4, pp 645-653, issn 0095-2990, 9 p.Article

An investigation of concurrent sex partnering in two samples of drug users having large numbers of sex partnersWILLIAMS, Mark L; ROSS, Michael W; ATKINSON, John et al.International journal of STD & AIDS. 2006, Vol 17, Num 5, pp 309-314, issn 0956-4624, 6 p.Article

A cluster analysis of drug use and sexual HIV risks and their correlates in a sample of African-American crack cocaine smokers with HIV infectionSCHÖNNESSON, Lena Nilsson; ATKINSON, John; WILLIAMS, Mark L et al.Drug and alcohol dependence. 2008, Vol 97, Num 1-2, pp 44-53, issn 0376-8716, 10 p.Article