Cardiac innervation and conduction abnormalities.
D000109:Acetylcholine / Q000378:metabolism; D001145:Arrhythmias, Cardiac / Q000209:etiology*; D001919:Bradycardia / Q000209:etiology; D006321:Heart / Q000294:innervation*; D006323:Heart Arrest / Q000209:etiology; D006801:Humans; D010275:Parasympathetic Nervous System; D013564:Sympathetic Nervous System
D000109:Acetylcholine