Coronary VasospasmMicrocirculationVasospasm, IntracranialAngina Pectoris, VariantErgonovineCoronary VesselsCoronary AngiographyIsosorbide DinitrateElectrocardiographySubarachnoid HemorrhageCoronary CirculationCoronary Artery DiseaseVasodilator AgentsVasoconstrictionDiltiazemAngioplasty, Balloon, CoronaryAcetylcholineCoronary StenosisCalcium Channel BlockersAngina PectorisMyocardial InfarctionCoronary Artery BypassNitratesCardiac Catheterizationrho-Associated KinasesCoronary DiseaseBasilar ArteryArteriolesCoronary AneurysmBlood Flow VelocityCoronary ThrombosisIschemic Attack, TransientVasodilationPapaverineCerebral AngiographyCapillariesLaser-Doppler FlowmetryMouth FloorCoronary Restenosis