[1] Schwarzwald Baar Hosp, Dept Anesthesiol Intens Care Emergency Med & Pain, Klinikstrasse 11, D-78052 Villingen Schwenningen, Germany
[2] Witten Herdecke Univ, Fac Hlth, Sch Med, Witten, Germany
[3] Training Ctr Emergency Med NOTIS eV, Engen, Germany
[4] Hlth Care Assoc Dist Constance, Inst Infect Control & Infect Prevent, Hegau Jugendwerk Gailingen, Gailingen, Germany
[5] Ludwig Maximilians Univ Munchen, Univ Hosp, Inst Med Educ, Munich, Germany
[6] Univ Freiburg, Med Ctr, Dept Anesthesiol & Crit Care, Freiburg, Germany
[7] Hegau Bodensee Hosp Singen, Inst Anesthesiol Intens Care Emergency Med & Pain, Hlth Care Assoc Dist Constance GLKN, D-78224 Singen, Germany
[8] Univ Hosp Augsburg, Emergency Dept, Stenglinstr 2, D-86156 Augsburg, Germany
[9] Vivantes Humboldt Hosp Berlin, Emergency Dept, Berlin, Germany
[10] Gemeinschaftsklinikum Mittelrhein, Emergency Dept, Koblenz, Germany
[11] Boston Vet Affairs Healthcare Syst, Boston, MA USA
[12] Tufts Univ, Sch Med, Boston, MA USA
[13] Furtwangen Univ, Fac Med & Life Sci, Villingen Schwenningen, Germany
[14] Community Hosp Solingen, Emergency Dept, Solingen, Germany
[15] Schwarzwald Baar Hosp, Emergency Dept, Villingen Schwenningen, Germany