I should say that I'm pretty sure I've used the phrase "false illness beliefs" at some point but NOT as a direct quote from the PACE authors. I have used it as an objective description of the theory they have promulgated. It is clear from everything they have written that the theory at its core posits the absence of an organic disorder. When I have quoted them directly, I have often used the word "unhelpful," since that is the word used in PACE. But the reason the beliefs are "unhelpful" is because they are presumed to be false; in this case, if they were true, they wouldn't be unhelpful. So I can easily defend the argument that the phrase "false illness beliefs" is an accurate description of their theory even if they themselves have never used the word "false."