Inclusion Criteria:  >= 18 years old surgeries performed at the Centre Léon Bérard  Exclusion Criteria:  Digestive endoscopy, interventional radiology, brachytherapy (operating rooms outside the central operating room) Patient who decline to participate in the study Active systemic infection Hyperthermic Intraperitoneal Chemotherapy (HIPEC) or Intrathoracic Chemotherapy (HITeC) Deprivation of liberty operation performed under local anesthesia only