Note from JWR:

Sunday, Oct 16, 2005

I would greatly appreciate any further comments/corrections to the following article, particularly from our readers who are doctors. Special thanks to "Dr. November" who has already made some comments and additions. I have now made it available for widespread dissemination as a "free use" piece that can be e-mailed and posted to various forums. (See the new button in my blog site top bar.)