Comparative study of the perceived quality of life of patients in treatment for cocaine and heroin dependence in spain: Differences by gender and time in treatment

1. Morales-Manrique, C.C.
2. Tomás-Dols, S.
3. Zarza-González, M.
4. Vidal-Infer, A.
5. Álvarez, F.J.
6. Valderrama-Zurián, J.C.