Factors causing awareness during surgery.
D000768:Anesthesia, General / Q000009:adverse effects*; D000769:Anesthesia, Inhalation / Q000295:instrumentation; D000771:Anesthesia, Intravenous / Q000009:adverse effects; D006801:Humans; D013514:Surgical Procedures, Operative; D013997:Time Factors; D012122:Ventilators, Mechanical