QuipazinePiperazinesSerotonin Receptor AgonistsReceptors, SerotoninSerotonin Antagonists2,5-Dimethoxy-4-MethylamphetamineDesigner DrugsRitanserinNervous System NeoplasmsSerotonin AgentsReceptor, Serotonin, 5-HT2CEpidural SpaceSerotonin2-Methyl-4-chlorophenoxyacetic AcidAscarisBuspironeMethysergideSerotonin 5-HT2 Receptor AgonistsFenfluramine