Modeling of the in vivo antinociceptive interaction between an opioid agonist, (+)-O-desmethyltramadol, and a monoamine reuptake inhibitor, (-)-O-desmethyltramadol, in rats

1. Garrido, M.J.
2. Valle, M.
3. Campanero, M.A.
4. Calvo, R.
5. Trocóniz, I.F.