I was just reading something about assessing outcomes in trial, and the dangers of bias (nothing vital: http://www.testingtreatments.org/tt...tments/fair-measurement-of-treatment-outcome/). I've read some trials for mental health problems that use blinded assessments of patients by clinicians/researchers as an outcome measure. Is anyone aware of that having been done for CFS? I'm far from confident it would be useful, but it would be interesting to know if it had been done, and by whom. It could well be an improvement over self-report. I've not seen it, or seen it referred to (in papers, or by others here), but thought that I'd ask anyway.