The most concise, lucid and discriminating document defining ME/CFS to date. Co-authored by some of the most progressive ME/CFS doctors and researchers, it's published in it's entirety in The Journal of Chronic Fatigue Syndrome, February 2003. A great article to have your family doctor, occupational therapist, physiotherapist or caregiver read. My main concern is that it does not give information or insight into the most severe cases of ME/CFS. Otherwise, it's a fantastic start.