"Tim, I just read your letter about Invisalign, and as you supposed, there was at least one orthodontist reading the letter – me. ... I considered buying Invisalign some years ago, but did not. However, your analysis of the company has renewed my interest. I have been a subscriber of Cabot publications for many years, and have recommended your service to friends. Thanks for your great work."
-Dr. G. Casey, Wiesbaden, Germany
