[1] Yale Sch Med, Dept Emergency Med, POB 208093, New Haven, CT 06520 USA
[2] Brown Univ, Alpert Med Sch, Dept Emergency Med, Providence, RI 02912 USA
[3] Yale Sch Med, Natl Clinician Scholars Program, New Haven, CT USA
[4] Yale Sch Med, New Haven, CT USA
[5] Yale Sch Publ Hlth, Chron Dis Epidemiol, New Haven, CT USA
[6] Yale Sch Med, Sect Gen Internal Med, New Haven, CT USA