Surgical operations in short-stay hospitals.
D000367:Age Factors; D005069:Evaluation Studies as Topic; D005260:Female; D005843:Geography; D006761:Hospitals / Q000706:statistics & numerical data*; D006801:Humans; D007902:Length of Stay; D008297:Male; D012737:Sex Factors; D013223:Statistics as Topic; D013514:Surgical Procedures, Operative / Q000145:classification; D014481:United States