This article originally appeared in the Medical Sentinel 1998;3(5):171-178. It has been revised, updated, and published in the Journal of American Physicians and Surgeons 2007;12(3):79-90. Copyright ©1996-2010 Association of American Physicians and Surgeons.
The following link is provided to the JPANDS.org website where the article can be viewed and/or downloaded in PDF format: www.jpands.org/vol12no3/robinson.pdf