tag:blogger.com,1999:blog-9726826.post6970480265510240566..comments2008-05-21T11:07:52.389-07:00Comments on THE THYROIDOLOGISTS BLOG: SEE WHAT A THYROID EXPERT WITH CREDENTIALS HAS TO SAY: PEI: What is PEI and why do I need to know about i...Dr. Richard B. Guttler M.D., F.A.C.E.http://www.blogger.com/profile/03049213897036336976dr.guttler@thyroid.comBlogger0125