[1] Maggiore Hosp, Dept Anaesthesia, Intens Care & Emergency Med Serv, Bologna, Italy
[2] Univ Bern, Bern Univ Hosp, Dept Anesthesiol & Pain Med, Bern, Switzerland
[3] Sigmund Freud Univ Vienna, Sch Med, Vienna, Austria
[4] Univ Hosp Cologne, Dept Anaesthesiol & Intens Care Med, Cologne, Germany
[5] Interassoc Rescue Serv, Bern, Switzerland
[6] Univ Med & Pharm Gr T Popa Iasi, Emergency Cty Hosp Sf Spiridon, Emergency Dept, Iasi, Romania
[7] Amer Med Ctr Cyprus, Nicosia, Cyprus
[8] Univ Warwick, Warwick Med Sch, Warwick Clin Trials Unit, Coventry, W Midlands, England
[9] Univ Copenhagen, Copenhagen Emergency Med Serv, Copenhagen, Denmark
[10] Calderdale Royal Hosp, Emergency Dept, Halifax, NS, Canada
[11] Oslo Univ Hosp, Dept Anesthesiol, Oslo, Norway
[12] Univ Milan, Dept Pathophysiol & Transplantat, Milan, Italy
[13] Fdn IRCCS Ca Granda Osped Maggiore Policlin, Dept Anesthesiol Intens Care & Emergency, Milan, Italy
[14] AUVA Trauma Ctr Salzburg, Dept Anaesthesiol & Intens Care, Salzburg, Austria
[15] Med Univ Vienna, Dept Emergency Med, Vienna, Austria
[16] Univ Cattolica Sacro Cuore, Fdn Policlin Univ A Gemelli, Inst Anaesthesia & Intens Care, IRCCS, Rome, Italy
[17] Antwerp Univ Hosp, Emergency Dept, Edegem, Belgium
[18] Univ Antwerp, Edegem, Belgium