1. Epidemiologic features of isolated syncope: the Framingham Study;Savage;Stroke,1985
2. Syncope in a population of healthy young adults; incidence, mechanisms, and significance;Dermksian;J Am Med Assoc,1958
3. Syncope in an elderly, institutionalised population: prevalence, incidence, and associated risk;Lipsitz;Q J Med,1985
4. Evaluation and management of syncope;Kapoor;Contemp Intern Med,1994
5. Workup and management of patients with syncope;Kapoor;Med Clin North Am,1995