[1] Tech Univ Munich, Dept Anesthesiol & Intens Care, Klinikum Rechts Isar, Munich, Germany
[2] MVZ Perioperat Med Munich, Munich, Germany
[3] Frauenklin Dr Geisenhofer, Munich, Germany
[4] Univ Hosp Basel, Clin Anaesthesia Intermediate Care Prehosp Emergen, Basel, Switzerland
[5] Univ Hosp Basel, Clin Anaesthesia Intermediate Care Prehosp Emergen, Spitalstr 21, CH-4031 Basel, Switzerland