Letter: Vagal stimulation and VF.
D000818:Animals; D003097:Collateral Circulation; D004285:Dogs; D004558:Electric Stimulation; D009203:Myocardial Infarction / Q000150:complications*; D014630:Vagus Nerve / Q000502:physiology*; D014693:Ventricular Fibrillation / Q000209:etiology*