[1] Med Univ Vienna, Dept Emergency Med, Vienna, Austria
[2] PULS Austrian Cardiac Arrest Awareness Assoc, Vienna, Austria
[3] Fdn IRCCS Policlin San Matteo, Div Cardiol, Pavia, Italy
[4] Fdn IRCCS Policlin San Matteo, Cardiac Arrest & Resuscitat Sci Res Team RESTART, Pavia, Italy
[5] Med Univ Vienna, Dept Internal Med 2, Div Cardiol, Vienna, Austria