12 I do not accept the thoughtful submissions made for the worker that, although the material before the panel did not refer to an 'undifferentiated somatoform disorder', it did establish a factual foundation, in terms of the worker's presentation and physical symptoms, upon which such a diagnosis could legitimately be based. Even accepting the panel's view of that presentation and those physical symptoms, this diagnosis could not have been adopted without bringing the possibility to the attention of the parties. It is very clear that the employer would have strongly disputed, as it now disputes, that such a diagnosis was appropriate. I accept its submission that, with notice, it would have made submissions and presented further material as to why it was not appropriate. Moreover, assuming that, without actually saying so, the panel based its diagnosis upon DSM-IV or DSM-V, there appears to be a question, which may matter in the present case, as to which version applies and how it is to be applied. The employer should have been given the opportunity to be heard in relation to these questions. Of course, that would probably have led to a response on behalf of the worker that would also require consideration.