Okay, deanusa… Here’s a few links: It’s called the Joslin’s Medalists Study.
https://forum.tudiabetes.org/topics/discussion-with-dr-king-of
https://forum.tudiabetes.org/topics/two-studies-of-long-term
https://forum.tudiabetes.org/topics/the-joslin-medalist-study-will
https://forum.tudiabetes.org/topics/joslin-medalist-study-update
https://forum.tudiabetes.org/topics/joslin-50year-medalists-give
https://forum.tudiabetes.org/topics/the-most-recent-report-from
https://forum.tudiabetes.org/topics/cpeptide-helps-prevent
You can search “Joslin Medalist Study” in the search bar, under forum discussions, and there are lots and lots of links… Mostly from Richard157. The study might still go on till April 2011, or even beyond, it seems.