Psychosocial and behavioral differences among drug injectors who use and do not use syringe exchange programs
AIDS and Behavior (2005) - Comment
pubmed: 16237501  doi: 10.1007/s10461-005-9020-3  issn: 1090-7165  issn: 1573-3254 

Lauretta E. Grau, Ricky N. Bluthenthal, Patricia Marshall, Merrill Singer, Robert Heimer