Concerns about clinical drug trials.

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[5]  D. Klein,et al.  Placebo run-in period in studies of depressive disorders , 1998, British Journal of Psychiatry.

[6]  P. Leber.  Hazards of Inference: The Active Control Investigation , 1989, Epilepsia.

[7]  W. Brown,et al.  Placedo response in depression: A search for predictors , 1988, Psychiatry Research.

[8]  R. O. Friedel,et al.  Prediction of tricyclic antidepressant response: a critical review. , 1976, Archives of general psychiatry.

[9]  R. Lipman,et al.  PREVIOUS MEDICATION, DURATION OF ILLNESS AND PLACEBO RESPONSE , 1966, The Journal of nervous and mental disease.

[10]  J. Ieni,et al.  Responders to antidepressant drug treatment: a study comparing nefazodone, imipramine, and placebo in patients with major depression. , 1996, The Journal of clinical psychiatry.

[11]  P. Leber.  Is there an alternative to the randomized controlled trial? , 1991, Psychopharmacology bulletin.

[12]  P. Joyce,et al.  Predictors of drug response in depression. , 1989, Archives of general psychiatry.