[1] NATL JEWISH HOSP & RES CTR, DEPT BEHAV SCI, PSYCHOPHYSIOL RES LABS, 3800 E COLFAX AVE, DENVER, CO 80206 USA
[2] UNIV COLORADO, MED CTR, DEPT PSYCHIAT, DENVER, CO USA
[3] NATL JEWISH HOSP & RES CTR, DEPT ALLERGY CLIN IMMUNOL & CHEST, DENVER, CO USA