Authors:
Somaini, B
Wang, J
Perozo, M
Kuhn, F
Meili, D
Grob, P
Flepp, M
Citation: B. Somaini et al., A continuing concern: HIV and hepatitis testing and prevalence among drug users in substitution programmes in Zurich, Switzerland, AIDS CARE, 12(4), 2000, pp. 449-460