[1] Indiana Univ Sch Med, Dept Emergency Med, Indianapolis, IN 46202 USA
[2] Regenstrief Inst Hlth Care, Indianapolis, IN USA
[3] Vanderbilt Univ, Dept Emergency Med, 221 Kirkland Hall, Nashville, TN 37235 USA
[4] Vet Hlth Adm, Richmond, VA USA
[5] Hosp Clin Barcelona, Emergency Dept, Barcelona, Spain
[6] Hosp Gen Univ Gregorio Maranon, Dept Cardiol, Madrid, Spain
[7] Univ Texas Southwestern, Dept Emergency Med, Dallas, TX USA
[8] Univ Sapienza Rome, Dept Med Surg Sci & Translat Res, Rome, Italy
[9] Royal Infirm Edinburgh NHS Trust, Emergency Med Res Grp, Edinburgh, Midlothian, Scotland
[10] Univ Helsinki, Dept Emergency Care, Helsinki, Finland
[11] Helsinki Univ Hosp, Helsinki, Finland
[12] Thomas Jefferson Univ, Sidney Kimmel Med Coll, Philadelphia, PA 19107 USA
[13] Thomas Jefferson Univ, Natl Acad Ctr Telehlth, Philadelphia, PA 19107 USA
[14] Cyprus Univ Technol, Dept Nursing, Limassol, Cyprus
[15] Wayne State Univ, Dept Emergency Med, Detroit, MI 48202 USA
[16] Wayne State Univ, Cardiovasc Res Inst, Detroit, MI 48202 USA
[17] Einstein Med Ctr Montgomery, East Norriton, PA USA
[18] Charite Univ Med Berlin, Dept Cardiol, Berlin, Germany