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Balady GJ, Williams MA, Ades PA, Bittner V, Comoss P, Foody JA, Franklin B, Sanderson B, Southard D; American Heart Association Exercise, Cardiac Rehabilitation, and Prevention Committee; Council on Clinical Cardiology; Councils on Cardiovascular Nursing, Epidemiology and Prevention, and Nutrition, Physical Activity, and Metabolism; American Association of Cardiovascular and Pulmonary Rehabilitation.Balady GJ, et al.J Cardiopulm Rehabil Prev. 2007 May-Jun;27(3):121-9. doi: 10.1097/01.HCR.0000270696.01635.aa.J Cardiopulm Rehabil Prev. 2007.PMID: 17558191