Effects of prototypic calcium channel blockers in methadone-maintained humans responding under a naloxone discrimination procedure.
Oliveto A, Mancino M, Sanders N, Cargile C, Benjamin Guise J, Bickel W, Brooks Gentry W. Effects of prototypic calcium channel blockers in methadone-maintained humans responding under a naloxone discrimination procedure. Eur J Pharmacol. 2013 Sep 05; 715(1-3):424-35.