Supporting information
(XLSX)Click here for additional data file.The authors would like to thank the volunteers for participating in this study, as well as the Bern Simulation- and CPR-Centre (BeSiC) at the Bern University Hospital for providing facilities and equipment. We also would like to thank Jeannie Wurz, Medical Editor, and Darren Hight, PhD, Bern, Switzerland, for their editorial assistance.