[Nothing new under the sun?].
Hansen
O H
OH
Schulze
S
S
Sørensen
F H
FH
D002763:Cholecystectomy / Q000379:methods* / Q000592:standards; D017081:Cholecystectomy, Laparoscopic / Q000379:methods / Q000592:standards; D002769:Cholelithiasis / Q000601:surgery*; D003718:Denmark; D006801:Humans; D011785:Quality Assurance, Health Care