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Assessment of autonomic nervous activity by heart rate spectral analysis in patients with variant angina

HypertensionHeart FailureAutonomic SystemAutonomic Nervous ActivityCardiovascular DiseaseElectrophysiological EvaluationPhysiologyVariant AnginaNeurologyElectrophysiologyCardiovascular FunctionPublic HealthMedicineCardiologyCardiac MechanicCardiovascular Imaging