When to operate for acute cholecystitis.
D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000368:Aged; D002763:Cholecystectomy / Q000401:mortality; D002764:Cholecystitis / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications