[1] Queen Alexandra Hosp, Portsmouth Hosp NHS Trust, Dept Crit Care, Portsmouth PO6 3LY, Hants, England
[2] W Penn Allegheny Hlth Syst, Pittsburgh, PA USA
[3] Bournemouth Univ, Bournemouth, Dorset, England
[4] Univ Coll London Hosp NHS Fdn Trust, London, England
[5] Maryland Patient Safety Ctr, Elkridge, MD USA
[6] Univ Tasmania, Rural Clin Sch, Hobart, Tas 7001, Australia
[7] Austin Hosp, Heidelberg, Vic 3084, Australia
[8] Univ Minnesota, Minneapolis, MN USA
[9] Minneapolis VA Med Ctr, Minneapolis, MN USA
[10] Maggiore Hosp, Bologna, Italy
[11] Patients Patient Safety Canada, Mississauga, ON, Canada
[12] Austin Hlth, Heidelberg, Vic, Australia
[13] Mothers Med Error, Columbia, SC USA
[14] Univ New S Wales, Liverpool, NSW, Australia
[15] Simpson Ctr Hlth Serv Res, Liverpool, NSW, Australia
[16] Beth Israel Deaconess Med Ctr, Boston, MA 02215 USA
[17] Harvard Univ, Sch Med, Boston, MA USA
[18] Univ Pittsburgh, Pittsburgh, PA USA
[19] Johns Hopkins Univ, Sch Med, Baltimore, MD USA
[20] Univ Hosp, Lund, Sweden
[21] Nenagh Hosp, Nenagh, Cty Tipperary, Ireland
[22] Stanford Univ, Sch Med, Stanford, CA 94305 USA
[23] Herlev Hosp, Danish Inst Med Simulat, DK-2730 Herlev, Denmark
[24] John Radcliffe Hosp, Oxford OX3 9DU, England
[25] Univ Penn, Philadelphia, PA 19104 USA
[26] N Shore Univ Hosp, New York, NY USA
[27] Long Isl Jewish Med Ctr, New York, NY USA
[28] Univ Toronto, Toronto, ON, Canada
[29] Univ Pittsburgh, Sch Med, Pittsburg, KS USA
[30] Dept Vet Affairs, Pittsburg, KS USA
[31] Univ London Imperial Coll Sci Technol & Med, St Marys Hosp, Dept Anaethesia, London, England