[1] Univ Colorado, Sch Med, Dept Emergency Med, Aurora, CO USA
[2] Denver Hlth & Hosp Author, Dept Emergency Med, 601 Bannock St,Mail Code 0108, Denver, CO 80204 USA
[3] Univ Colorado, Dept Emergency Med Denver, Denver, CO 80202 USA
[4] Univ Colorado, Sch Med Aurora, Denver, CO USA
[5] Univ Colorado Aurora, Dept Family Med, Ctr Adv Profess Excellence CAPE Commun Skills Dev, Denver, CO USA