1. Chronic fatigue syndrome: a review;Afari;Afr J Psychiatry,2003
2. Chronic fatigue syndrome;Prins;Lancet,2006
3. Prevalence of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) in 3 regions of England: a repeated cross-sectional study in primary care;Nacul;BMC Med,2011
4. Prevalence and incidence of chronic fatigue syndrome in Wichita, Kansas;Reyes;Arch Intern Med,2003
5. The chronic fatigue syndrome, a comprehensive approach to its definition and study;Fukuda;Arch Intern Med,1994