1. The chronic fatigue syndrome;Shafran;Am J Med,1991
2. Prevalence and incidence of chronic fatigue syndrome in Wichita, Kansas;Reyes;Arch Intern Med,2003
3. Chronic fatigue syndrome: a working case definition;Holmes;Arch Intern Med,1988
4. The chronic fatigue syndrome: a comprehensive approach to its definition and study;Fukuda;Arch Intern Med,1994
5. Chronic fatigue syndrome: a review;Afari;Am J Psychiatry,2003