title: Laparoscopic cholecystectomy safer than open? Administrative data gone astray.
authors.forename: David R
authors.initials: DR
authors.lastname: Flum
mesh_terms: D002763:Cholecystectomy; D017081:Cholecystectomy, Laparoscopic; D003627:Data Interpretation, Statistical; D006801:Humans; D012449:Safety