References
- Marmor , M. , Titus , S. , Wolfe , H. , Krasinski , K. , Maslansky , R. Simberkoff , M. 1994 . Retention, Behavior Change and HIV-Seroconversion Among Injecting Drug Users (IDUs) and Sexual Partners of IDUs . AIDS Research and Human Retroviruses , 10 ( Suppl 2 ) : S207 – S213 .