1 ETH ZurichZurich, Switzerland Institute of PsychologyUniversity of ZurichZurich, Switzerland Institute of Physicians for Anaesthesia and Intensive CareKlinik Hirslanden ZurichZurich, Switzerland Département de Psychologie, Industrial Psychology and Human FactorsUniversity of FribourgFribourg, Switzerland Institute of AnesthesiologyUniversity Hospital ZurichZurich, Switzerland.