Retracted: PDF OnlyWetzel Leonore; Zadrazil, Markus; Paternostro-Sluga, Tatjana; Authried, Georg; Kozek-Langenecker, Sibylle; Scharbert, GiselaEuropean Journal of Anaesthesiology: January 2014 - Volume 31 - Issue 1 - p 35-40 doi: 10.1097/EJA.0b013e328365ae28 Free Metrics