The authors conflate the symptom of chronic fatigue with the discrete disease ME/CFIDS. They cite studies that have studied idiopathic chronic fatigue but pass it off as being about ME/CFIDS. It seems the authors are too smart and educated to have made this rank amateur mistake, which begs the question "why spread misinformation about a very serious disease?" This type of misinformation about ME causes a tremendous amount of iatrogenic morbidity. First, do no harm.