title: Survival of the fittest--more evidence.
authors.forename: Gary J
authors.initials: GJ
authors.lastname: Balady
mesh_terms: D002318:Cardiovascular Diseases / Q000401:mortality / Q000503:physiopathology; D015444:Exercise / Q000502:physiology; D005080:Exercise Test; D017079:Exercise Tolerance; D006801:Humans; D008297:Male; D009026:Mortality; D010809:Physical Fitness / Q000502:physiology; D011379:Prognosis; D012307:Risk Factors