Comment on

• The economic cost of chronic fatigue and chronic fatigue syndrome in UK primary care.

  McCrone P, Darbishire L, Ridsdale L, Seed P. McCrone P, et al. Psychol Med. 2003 Feb;33(2):253-61. doi: 10.1017/s0033291702006980. Psychol Med. 2003. PMID: 12622304
• Fatigue in a community sample of twins.

  Sullivan PF, Kovalenko P, York TP, Prescott CA, Kendler KS. Sullivan PF, et al. Psychol Med. 2003 Feb;33(2):263-81. doi: 10.1017/s0033291702007031. Psychol Med. 2003. PMID: 12622305
• Predictors of outcome in a fatigued population in primary care following a randomized controlled trial.

  Chalder T, Godfrey E, Ridsdale L, King M, Wessely S. Chalder T, et al. Psychol Med. 2003 Feb;33(2):283-7. doi: 10.1017/s0033291702007006. Psychol Med. 2003. PMID: 12622306 Clinical Trial.
• Psychiatric adjustment in chronic fatigue syndrome of childhood and in juvenile idiopathic arthritis.

  Rangel L, Garralda ME, Hall A, Woodham S. Rangel L, et al. Psychol Med. 2003 Feb;33(2):289-97. doi: 10.1017/s0033291702006529. Psychol Med. 2003. PMID: 12622307