1. Altman DG, Machin D, Bryant TN, Gardner MJ (2000) Statistics with Confidence. BMJ Publishing Group,London
2. Association of Child Psychology and Psychiatry Working Group on CFS (1999) Chronic Fatigue Syndrome in Children and Adolescents: Recommendations for Current Best Practice. In: Garralda E (ed) Chronic Fatigue Syndrome: Helping children and adolescents, Occasional Paper No16 supplement. London, The Association for Child Psychology and Psychiatry
3. Brace MJ, Scott MS, McCauley E, Sherry DD (2000) Family reinforcement of illness behavior: a comparison of adolescents with chronic fatigue syndrome, juvenile arthritis and healthy controls. Dev Behav Pediatr 21:332–339
4. Carter BD, Edwards JF, Kroenenberger WG, Michalczyk L, Marshall GS (1995) Case control study of chronic fatigue in pediatric patients. Pediatrics 95:179–186
5. Carter BD, Kroenenberger WG, Edwards JF, Marshall G, Schikler KN, Causey (1999) Psychological symptoms in Chronic Fatigue Syndrome and Juvenile Rheumatoid Arthritis. Pediatrics 103:975–979