Different Procedures
From what I am starting to understand, they are all pretty similar in that they are endoscopically reducing the stoma and sometimes pouch size - they are just being performed by different companies...if that makes sense.
And I know one of the "R's" in Restore stands for "Randomized" so I think it is a double-blinded study, where the others may not be. I'm still trying to find out more, myself..lol.