I wanted to add, although I don't worry much about the data they are getting, I did want to mention the stress of some of the tests. I've had two MRI's,, not usually claustrophobic , but it get rough in that tube for me. The first time , the tech kept talking to me, was very comforting and relaxing. The second one, the music they play couldn't drown out that banging noise,. time was at a standstill and I did wonder at times if everyone went home for the day. Lately I've been going for CAT scan and that has been much better. I guess it's what we have to go through. Best to all.