Luedi Markus M, Koppenberg Joachim, Stüber Frank
From the Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, Bern (MML, FS) and Department of Anesthesiology, Pain Management and Emergency Medicine, Ospidal, Healthcarecenter Unterengadin, Scuol, Switzerland (JK).
Eur J Anaesthesiol. 2014 Jan;31(1):55-6. doi: 10.1097/EJA.0b013e328363d627.