| Literature DB >> 20167881 |
Salaam Semaan, Douglas D Heckathorn, Don C Des Jarlais, Richard S Garfein.
Abstract
Mesh:
Year: 2010 PMID: 20167881 PMCID: PMC2836345 DOI: 10.2105/AJPH.2009.184200
Source DB: PubMed Journal: Am J Public Health ISSN: 0090-0036 Impact factor: 9.308