The worried-well revisited.
D000208:Acute Disease; D000553:Ambulatory Care; D002908:Chronic Disease; D003695:Delivery of Health Care; D004632:Emergency Medical Services / Q000706:statistics & numerical data; D006123:Group Practice; D006296:Health Services / Q000706:statistics & numerical data*; D006801:Humans; D007354:Insurance, Major Medical; D007388:Internal Medicine; D009017:Morbidity; D009922:Oregon; D010808:Physical Examination; D010820:Physicians / Q000706:statistics & numerical data; D011315:Preventive Medicine; D011320:Primary Health Care