[1] Univ Amsterdam, Locat VU Univ Med Ctr, Amsterdam Publ Hlth Res Inst, Sect Acute Med,Med Ctr,Dept Internal Med, De Boelelaan 1117, NL-1081 HV Amsterdam, ZH, Netherlands
[2] Univ Amsterdam, Locat VU Univ Med Ctr, Amsterdam Publ Hlth Res Inst, Dept Publ & Occupat Hlth,Med Ctr, Amsterdam, Netherlands
[3] Maastricht Univ, CAPHRI Sch Publ Hlth & Primary Care Aging & Long, Dept Hlth Serv Res, Maastricht, Netherlands
[4] Maxima MC, Dept Internal Med, Veldhoven Eindhoven, Netherlands
[5] Univ Hosp South Manchester, Dept Acute Med, Manchester, Lancs, England
[6] Ysbyty Gwynedd Hosp, Dept Acute Med, Bangor, Gwynedd, Wales
[7] Bangor Univ, Sch Med Sci, Bangor, Gwynedd, Wales
[8] East Suffolk & North Essex NHS Fdn Trust Ipswich, Ipswich Hosp, Dept Acute Med, Ipswich, Suffolk, England
[9] Maastricht Univ, Med Ctr, Dept Internal Med, Div Gen Internal Med, Maastricht, Netherlands
[10] Hosp South West Jutland, Dept Emergency Med, Esbjerg, Denmark
[11] Erasmus MC, Dept Internal Med, Rotterdam, Netherlands
[12] Univ Basel, Dept Cognit & Decis Sci, Basel, Switzerland
[13] Univ Hosp Basel, Dept Emergency Med, Basel, Switzerland
[14] Salford Royal NHS Fdn Trust, Dept Internal Med, Sect Acute Med, Salford, Lancs, England
[15] Aalborg Univ Hosp, Clin Internal & Emergency Med, Ctr Prehosp & Emergency Res, Aalborg, Denmark
[16] Aalborg Univ Hosp, Inst Clin Med, Aalborg, Denmark
[17] Aalborg Univ, Aalborg, Denmark
[18] Chinese Univ Hong Kong, Dept Emergency Med, Hong Kong, Peoples R China
[19] Addenbrookes Hosp, Dept Med, Cambridge, England
[20] St James Hosp, Dept Internal Med, Dublin, Ireland
[21] Odense Univ Hosp, Dept Emergency Med, Odense, Denmark