Association of unconscious race and social class bias with vignette-based clinical assessments by medical students.
Haider AH, Sexton J, Sriram N, Cooper LA, Efron DT, Swoboda S, Villegas CV, Haut ER, Bonds M, Pronovost PJ, et al. JAMA. 2011 Sep 7; 306(9):942-51.