Xu G, Veloski J, Hojat M, Politzer R M, Rabinowitz H K, Rattner S L
Center for Research in Medical Education and Health Care, Jefferson Medical College, Philadelphia, PA 19107-5083, USA.
Acad Med. 1997 Oct;72(10 Suppl 1):S109-11. doi: 10.1097/00001888-199710001-00037.