Geographic Favoritism in Liver TransplantationUbel, Peter A.Caplan, Arthur L.Author information(Ubel) Philadelphia Veterans Affairs Medical Center(Caplan) University of Pennsylvania Center for Bioethics; Philadelphia, PA 19104New England Journal of Medicine 340(12):p 964-965, March 25, 1999.Copyright © Owned, published, and © copyrighted, 1999, by the MASSACHUSETTS MEDICAL SOCIETY