[1] Univ Pittsburgh, Dept Crit Care Med, Sch Med, 3550 Terrace St,Scaife Hall,Rm 639, Pittsburgh, PA 15261 USA
[2] Univ Pittsburgh, Sch Med, Dept Emergency Med, 3550 Terrace St,Scaife Hall,Rm 639, Pittsburgh, PA 15261 USA
[3] Clin Res Invest & Syst Modeling Acute Illness CRI, Pittsburgh, PA USA
[4] New York State Dept Hlth, Albany, NY USA
[5] IPRO, Lake Success, NY USA
[6] Univ Michigan, Ann Arbor, MI 48109 USA
[7] Vet Affairs Ctr Clin Management Res, Ann Arbor, MI USA
[8] Ohio State Univ, Div Biostat, Coll Publ Hlth, Columbus, OH 43210 USA
[9] Washington Univ, St Louis, MO USA
[10] Brown Univ, Warren Alpert Med Sch, Providence, RI 02912 USA