Wald Hedy S, Reis Shmuel P, Borkan Jeffrey M
Box GB-232, Biomedical Building, Warren Alpert Medical School of Brown University, Providence, Rhode Island 02912, USA.
Med Educ. 2009 Nov;43(11):1110-1. doi: 10.1111/j.1365-2923.2009.03470.x. Epub 2009 Oct 2.