Kroenke K, Wood DR, Mangelsdorff AD, Meier NJ, Powell JB.  Chronic fatigue in primary care: prevalence, patient characteristics, and outcome . JAMA . 1988;;260:929-934.
Fukuda K, Straus SE, Hickie I, et al.  The chronic fatigue syndrome: a comprehensive approach to its definition and study . Ann Intern Med . 1994;;121:953-959.
Komaroff AL, Fagioli LR, Geiger AM, et al.  An examination of the working case definition of chronic fatigue syndrome . Am J Med . 1996;;100:56-64.
Buchwald D, Umali P, Umali J, Kith P, Pearlman T, Komaroff AL.  Chronic fatigue and the chronic fatigue syndrome . Ann Intern Med . 1995;;123:81-88.
Dobbins JG, Randall B, Reyes M, Steele L, Livens EA, Reeves WC.  The prevalence of chronic fatiguing illnesses among adolescents in the United States . J Chronic Fatigue Syndrome . 1997;;3:15-27.
Bates DW, Schmitt W, Buchwald D, et al.  Prevalence of fatigue and chronic fatigue syndrome in a primary care practice . Arch Intern Med . 1993;;153:2759-2765.
Powell R, Dolan R, Wessely S.  Attributions and self-esteem in depression and chronic fatigue syndrome . J Psychosom Res . 1990;;34:665-673.
Demitrack MA, Dale JK, Straus SE, et al.  Evidence for impaired activation of the hypothalamic-pituitary-adrenal axis in patients with chronic fatigue syndrome . J Clin Endocrinol Metab . 1991;;73:1224-1234.
Vercoulen JHMM, Swanink CMA, Zitman FG, et al.  Randomised, doubleblind, placebo-controlled study of fluoxetine in chronic fatigue syndrome . Lancet . 1996;;347:858-861.
Hickie I, Lloyd A, Wakefield D, Parker G.  The psychiatric status of patients with the chronic fatigue syndrome . Br J Psychiatry . 1990;;156:534-540.
Kruesi MJP, Dale J, Straus SE.  Psychiatric diagnoses in patients who have chronic fatigue syndrome . J Clin Psychiatry . 1989;;50:53-56.
Katon WJ, Buchwald DS, Simon GE, Russo JE, Mease PJ.  Psychiatric illness in patients with chronic fatigue and those with rheumatoid arthritis . J Gen Intern Med . 1991;;6:277-285.
Buchwald D, Cheney PR, Peterson DL, et al.  A chronic illness characterized by fatigue, neurologic and immunologic disorders, and active human herpesvirus type 6 infection . Ann Intern Med . 1992;;116:103-113.
Natelson BH, Cohen JM, Brassloff I, Lee H-J.  A controlled study of brain magnetic resonance imaging in patients with the chronic fatigue syndrome . J Neurol Sci . 1993;;120:213-217.
Ichise M, Salit IE, Abbey SE, et al.  Assessment of regional cerebral perfusion by 99Tcm-HMPAO SPECT in chronic fatigue syndrome . Nucl Med Commun . 1992;;13:767-772.
Schwartz RB, Komaroff AL, Garada BM, et al.  SPECT imaging of the brain: comparison of findings in patients with chronic fatigue syndrome, AIDS dementia complex, and major unipolar depression . AJR Am J Roentgenol . 1994;;162:943-951.
Bou-Holaigah I, Rowe PC, Kan J, Calkins H.  The relationship between neurally mediated hypotension and the chronic fatigue syndrome . JAMA . 1995;;274:961-967.
Freeman R, Komaroff AL.  Does the chronic fatigue syndrome involve the autonomic nervous system? Am J Med . 1997;;102:357-362.
Demitrack MA, Gold PW, Dale JK, Krahn DD, Kling MA, Straus SE.  Plasma and cerebrospinal fluid monamine metabolism in patients with chronic fatigue syndrome: preliminary findings . Biol Psychiatry . 1992;;32:1065-1077.
Bakheit AMO, Behan PO, Dinan TG, Gray CE, O'Keane V.  Possible upregulation of hypothalamic 5-hydroxytryptamine receptors in patients with postviral fatigue syndrome . BMJ . 1992;;304:1010-1012.
Cleare AJ, Bearn J, Allain T, et al.  Contrasting neuroendocrine responses in depression and chronic fatigue syndrome . J Affect Disord . 1995;;35:283-289.
Furman JMR.  Testing of vestibular function: an adjunct in the assessment of chronic fatigue syndrome . Rev Infect Dis . 1991;;13(
(suppl 1)
):S109-S111.
Ash-Bernal R, Wall C III, Komaroff AL, et al.  Vestibular function test anomalies in patients with chronic fatigue syndrome . Acta Otolaryngol . 1995;;115:9-17.
Sandman CA, Barron JL, Nackoul K, Goldstein J, Fidler F.  Memory deficits associated with chronic fatigue immune dysfunction syndrome . Biol Psychiatry . 1993;;33:618-623.
McDonald E, Cope H, David A.  Cognitive impairment in patients with chronic fatigue: a preliminary study . J Neurol Neurosurg Psychiatry . 1993;;56:812-815.
Schmaling KB, DiClementi JD, Cullum CM, Jones JF.  Cognitive functioning in chronic fatigue syndrome and depression . Psychosom Med . 1994;;56:383-388.
DeLuca J, Johnson SK, Beldowicz D, Natelson BH.  Neuropsychological impairments in chronic fatigue syndrome, multiple sclerosis, and depression . J Neurol Neurosurg Psychiatry . 1995;;58:38-43.
Marcel B, Komaroff AL, Fagioli LR, Kornish RJ, Albert MS.  Cognitive deficits in patients with chronic fatigue syndrome . Biol Psychiatry . 1996;;40:535-541.
Krupp LB, Jandorf L, Coyle PK, Mendelson WB.  Sleep disturbance in chronic fatigue syndrome . J Psychosom Res . 1993;;37:325-331.
Buchwald D, Pascualy R, Bombardier C, Kith P. Sleep disorders in patients with chronic fatigue . Clin Infect Dis . 1994;;18:568-572.
Morriss R, Sharpe M, Sharpley AL, Cowen PJ, Hawton K, Morris J.  Abnormalities of sleep in patients with chronic fatigue syndrome . BMJ . 1993;;306:1161-1164.
Landay AL, Jessop C, Lennette ET, Levy JA.  Chronic fatigue syndrome: clinical condition associated with immune activation . Lancet . 1991;;338:707-712.
Caligiuri M, Murray C, Buchwald D, et al. Phenotypic and functional deficiency of natural killer cells in patients with chronic fatigue syndrome . J Immunol . 1987;;139:3306-3313.
Morrison LJA, Behan WMH, Behan PO.  Changes in natural killer cell phenotype in patients with post-viral fatigue syndrome . Clin Exp Immunol . 1991;;83:441-446.
Bates DW, Buchwald D, Lee J, et al.  Clinical laboratory test findings in patients with chronic fatigue syndrome . Arch Intern Med . 1995;;155:97-103.
Konstantinov K, von Milecz A, Buchwald D, Jones J, Gerace L, Tan EM.  Autoantibodies to nuclear envelope antigens in chronic fatigue syndrome . J Clin Invest . 1996;;98:1888-1896.
Peakman M, Deale A, Field R, Mahalingam M, Wessely S.  Clinical improvement in chronic fatigue syndrome is not associated with lymphocyte subsets of function or activation . Clin Immunol Immunopathol . 1997;;82:83-91.
Dinerman H, Steere AC.  Lyme disease associated with fibromyalgia . Ann Intern Med . 1992;;117:281-285.
Marmion BP, Shannon M, Maddocks I, Storm P, Penttila I.  Protracted debility and fatigue after acute Q fever . Lancet . 1996;;347:977-978.
Yalcin S, Kuratsune H, Yamaguchi K, Kitani T, Yamanishi K.  Prevalence of human herpesvirus 6 variants A and B in patients with chronic fatigue syndrome . Microbiol Immunol . 1994;;38:587-590.
Patnaik M, Komaroff AL, Conley E, Ojo-Amaize EA, Peter JB.  Prevalence of IgM antibodies to human herpesvirus 6 early antigen (p41/38) in patients with chronic fatigue syndrome . J Infect Dis . 1995;;172:1364-1367.
Zorzenon M, Rukh G, Botta GA, Colle R, Barsanti LA, Ceccherini-Nelli L.  Active HHV-6 infection in chronic fatigue syndrome patients from Italy: new data . J Chronic Fatigue Syndrome . 1996;;2:3-12.
Cunningham L, Bowles NE, Lane RJM, Dubowitz V, Archard LC. Â Persistence of enteroviral RNA in chronic fatigue syndrome is associated with the abnormal production of equal amounts of positive and negative strands of enteroviral RNAÂ . J Gen Virol . 1990;;71:1399-1402.
Gow JW, Behan WMH, Clements GB, Woodall C, Riding M, Behan PO.  Enteroviral RNA sequences detected by polymerase chain reaction in muscle of patients with postviral fatigue syndrome . BMJ . 1991;;302:692-696.
Swanink CMA, Melchers WJG, Van Der Meer JWM, et al.  Enteroviruses and the chronic fatigue syndrome . Clin Infect Dis . 1994;;19:860-864.
DeFreitas E, Hilliard B, Cheney PR, et al.  Retroviral sequences related to human T-lymphotropic virus type II in patients with chronic fatigue immune dysfunction syndrome . Proc Natl Acad Sci USA . 1991;;88:2922-2926.
Khan AS, Heneine WM, Chapman LE, et al.  Assessment of a retrovirus sequence and other possible risk factors for the chronic fatigue syndrome in adults . Ann Intern Med . 1993;;118:241-245.
Nakaya T, Takahashi H, Nakamura Y, et al.  Demonstration of Borna disease virus RNA in peripheral blood mononuclear cells derived from Japanese patients with chronic fatigue syndrome . FEBS Lett . 1996;;378:145-149.
Bode L, Durrwald R, Rantam FA, Ferszt R, Ludwig H.  First isolates of infectious human Borna disease virus from patients with mood disorders . Mol Psychiatry . 1996;;1:200-212.
Suhadolnik RJ, Reichenbach NL, Hitzges P, et al.  Upregulation of the 2-5A synthetase/RNase L antiviral pathway associated with chronic fatigue syndrome . Clin Infect Dis . 1994;;18(
(suppl 1)
):S96-S104.
Manu P, Matthews DA, Lane TJ.  The mental health of patients with a chief complaint of chronic fatigue . Arch Intern Med . 1988;;148:2213-2217.
Kessler LG, Cleary PD, Burke JD.  Psychiatric disorders in primary care . Arch Gen Psychiatry . 1985;;42:583-587.
Gerber PD, Barrett J, Manheimer E, Whiting R, Smith R.  Recognition of depression by internists in primary care . J Gen Intern Med . 1989;;4:7-13.
Schor JB. The Overworked American. The Unexpected Decline of Leisure . New York, NY: Basic Books; 1992;.
Schluederberg A, Straus SE, Peterson P, et al.  Chronic fatigue syndrome research . Ann Intern Med . 1992;;117:325-331.
Goldenberg DL, Felson DT, Dinerman H.  A randomized, controlled trial of amitriptyline and naproxen in the treatment of patients with fibromyalgia . Arthritis Rheum . 1986;;29:1371-1377.
Buchwald D, Goldenberg DL, Sullivan JL, Komaroff AL.  The 'chronic, active Epstein-Barr virus infection' syndrome and primary fibromyalgia . Arthritis Rheum . 1987;;30:1132-1136.
Goldenberg DL, Simms RW, Geiger A, Komaroff AL.  High frequency of fibromyalgia in patients with chronic fatigue seen in a primary care practice . Arthritis Rheum . 1990;;33:381-387.
Peterson PK, Shepard J, Macres M, et al.  A controlled trial of intravenous immunoglobulin G in chronic fatigue syndrome . Am J Med . 1990;;89:554-560.
Lloyd AR, Hickie I, Brockman A, et al.  Immunologic and psychologic therapy for patients with chronic fatigue syndrome . Am J Med . 1993;;94:197-203.
Sharpe M, Hawton K, Simkin S, et al.  Cognitive behaviour therapy for the chronic fatigue syndrome: a randomised controlled trial . BMJ . 1996;;312:22-26.
Deale A, Chalder T, Marks I, Wessely S.  Cognitive behavior therapy for chronic fatigue syndrome . Am J Psychol . 1997;;154:408-414.
Wessely S, Butler S, Chalder T, David A.  The cognitive behavioural management of the post-viral fatigue syndrome . In: Jenkins R, Mowbray JF, eds. Post Viral Fatigue Syndrome . Chichester, England: John Wiley & Sons; 1991;:305-334.
Fulcher KY, White PD.  Randomized controlled trial of graded exercise in patients with the chronic fatigue syndrome . BMJ . 1997;;314:1647-1652.
Ware NC.  Suffering and the social construction of illness: the delegitimation of illness experience in chronic fatigue syndrome . Med Anthropol Q . 1992;;6:347-361.
McGarry F, GOw J,Behan PO.  Enterovirus in the chronic fatigue syndrome . Ann Intern Med . 1994;;120:972-973.