Current Comment.
D054874:Athletic Performance / Q000266:history* / Q000502:physiology; D001336:Automobiles / Q000266:history*; D001484:Baseball / Q000266:history* / Q000502:physiology; D004196:Disease Outbreaks / Q000266:history; D049673:History, 20th Century; D006801:Humans; D058085:Iron Compounds / Q000266:history* / Q000494:pharmacology; D008297:Male; D053580:Muscle Strength / Q000187:drug effects; D011051:Poliomyelitis / Q000453:epidemiology / Q000209:etiology / Q000266:history*
D058085:Iron Compounds