Kreiter Clarence D, James Paul A, Stansfield R Brent, Callaway Michael R
University of Iowa College of Medicine, Office of Consultation and Research in Medical Education, Iowa City, IA 52242-1008, USA.
Acad Med. 2002 Oct;77(10 Suppl):S70-2. doi: 10.1097/00001888-200210001-00023.