“…Most authors agree that outpatient laparoscopic cholecystectomy is safe and cost-eective for carefully selected patients [3,7,11,12,13,15,17,18,19]. Some researchers, however, argue that preselection is unnecessary, concluding that neither age nor comorbidity (usually identi®ed by ASA classi®cation of III or IV) alone or in combination is a contraindication for outpatient management [1, 4, 14, 17±19].…”