1. Paroxysmal heart block triggered by sitting up: a usually undetected cause of cerebral ischemia;Klein;Heart Lung,1988
2. The disorders of cardia rhythm;Schamroth,1975
3. Normal physiology of the cardiovascular system in the heart;Hurst,1990
4. Control of heart rate by the autonomic nervous system: studies in man on the interrelation between baroreceptor mechanism and exercise;Robinson;Clin Res,1966
5. Provocation of bradycardia and hypertension by isoproterenol and upright posture in patients with inexplained syncope;Almoquisty;N Engl J Med,1989