Alternative Options for Complex, Recurrent Pain States Using Cannabinoids, Psilocybin, and Ketamine: A Narrative Review of Clinical Evidence. - Edinoff, Amber N.; Fort, Juliana M.; Singh, Christina; Wagner, Sarah E.; Rodriguez, Jessica R.; Johnson, Catherine A.; Cornett, Elyse M.; Murnane, Kevin S.; Kaye, Adam M.; Kaye, Alan D. (Neurology International, 2022)