title: Beyond postural tachycardia syndrome.
authors.forename: Hossam I
authors.initials: HI
authors.lastname: Mustafa
authors.forename: David
authors.initials: D
authors.lastname: Robertson
mesh_terms: D019797:3-Iodobenzylguanidine; D001342:Autonomic Nervous System Diseases / Q000175:diagnosis* / Q000503:physiopathology; D001794:Blood Pressure / Q000502:physiology; D003431:Cross-Cultural Comparison; D003430:Cross-Sectional Studies; D005060:Europe; D005260:Female; D006321:Heart / Q000294:innervation*; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008297:Male; D009474:Neurons / Q000502:physiology; D009638:Norepinephrine / Q000097:blood*; D054972:Postural Orthostatic Tachycardia Syndrome / Q000175:diagnosis* / Q000453:epidemiology / Q000503:physiopathology; D019275:Radiopharmaceuticals; D013564:Sympathetic Nervous System / Q000503:physiopathology*; D015899:Tomography, Emission-Computed, Single-Photon; D014481:United States
chemical_list: D019275:Radiopharmaceuticals; D019797:3-Iodobenzylguanidine; D009638:Norepinephrine