Evaluating coronary care units.
D000367:Age Factors; D006276:Health Facility Size; D006801:Humans; D007362:Intensive Care Units / Q000592:standards*; D008875:Middle Aged; D009203:Myocardial Infarction / Q000401:mortality / Q000628:therapy*; D011446:Prospective Studies; D012189:Retrospective Studies