title: NORMAL VARIATIONS IN THE ST-T COMPLEX OF THE ELECTROCARDIOGRAM.
mesh_terms: D001341:Autonomic Nervous System; D004562:Electrocardiography; D006801:Humans; D006985:Hyperventilation; D013610:Tachycardia
keywords: AUTONOMIC NERVOUS SYSTEM; ELECTROCARDIOGRAPHY; HYPERVENTILATION; TACHYCARDIA