Affiliations

• ¹ Clinic for Anaesthesia, Intermediate Care, Prehospital Emergency Medicine and Pain Therapy, University Hospital Basel, University of Basel, Basel, Switzerland; University of Basel, Medical Faculty, Basel, Switzerland. Electronic address: daniel.bolliger@usb.ch.
• ² Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
• ³ University of Basel, Medical Faculty, Basel, Switzerland; Anesthesiology, Zurich City Hospital, Zurich, Switzerland.