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Puerto Rico Health Sciences Journal|September 1, 1996
Crack use in Puerto Rico: evidence of a recent epidemicT D Matos, R R Robles, C A Marrero, et al.
AIDS (London, England)|September 1, 1996
Behavioral effects of receiving HIV test results among injecting drug users in Puerto RicoH M Colón, R R Robles, C A Marrero, et al.
Boletin De La Asociacion Medica De Puerto Rico|December 1, 1990
AIDS risk behavior patterns among intravenous drug users in Puerto Rico and the United StatesR R Robles, H M Colón, T D Matos, et al.
Puerto Rico Health Sciences Journal|September 1, 1996
Mycobacterium tuberculosis infection among crack and injection drug users in San Juan, Puerto RicoJ C Reyes, R R Robles, H M Colón, et al.
American Journal of Epidemiology|March 1, 1992
Behavioral risk factors and human immunodeficiency virus (HIV) prevalence among intravenous drug users in Puerto RicoR R Robles, H M Colón, H Sahai, et al.
Puerto Rico Health Sciences Journal|April 1, 1993
Incarceration history as a risk factor for HIV infection among Puerto Rican injection drug usersR R Robles, C A Marrero, D H Freeman, et al.
International Journal of Epidemiology|July 16, 1999
Prevalence and correlates of anergy among drug users in Puerto RicoR R Robles, J C Reyes, H M Colón, et al.
Puerto Rico Health Sciences Journal|April 1, 1993
HIV risk behaviors and HIV seropositivity among young injection drug usersC A Marrero Rodríguez, R R Robles, H M Colón, et al.
AIDS Care|November 26, 1998
Factors associated with changes in sex behaviour among drug users in Puerto RicoR R Robles, C A Marrero, T D Matos, et al.
Boletin De La Asociacion Medica De Puerto Rico|July 21, 2009
Alcohol use among adolescents in Puerto Rico: the influence of physical and social neighborhood disorderJ C Reyes, H M Colón, R R Robles, et al.
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