BaclofenGABA-B Receptor AgonistsGABA AgonistsMuscle Relaxants, CentralReceptors, GABA-BMuscle SpasticityInfusion Pumps, ImplantableGABA-B Receptor AntagonistsSodium OxybateMuscimolInjections, SpinalGABA AntagonistsPhosphinic Acidsgamma-Aminobutyric AcidBicucullineReceptors, GABA-AOrganophosphorus CompoundsGABA AgentsNipecotic AcidsInfusions, SpinalReceptors, GABAAmino Acids, NeutralSpasmGABA-A Receptor AgonistsUrinary Bladder Calculi