Multicenter, double-blind, randomized, placebo-controlled, parallel-group study of the efficacy, safety, and tolerability of THC:CBD extract and THC extract in patients with intractable cancer-related pain. 22 Nov Dr D Smoked Medicinal Cannabis for Neuropathic Pain in HIV: A Randomized, Crossover Clinical Trial Preliminary efficacy andsafety of an oromucosalstandardized cannabisextract inchemotherapy-inducednausea and vomiting