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Cochrane Central Register of Controlled Trials (issue 4, 2002), Medline (1966 to January 2003), EMBASE/Excerpta Medica (1980 to January 2003), and PsycINFO (1974 to January 2003); proceedings of conferences on diabetes (1997–2002); reference lists of identified studies and reviews; and leading authors and experts in the field.
Study selection and assessment:
published or unpublished randomised controlled trials (RCTs) in any language comparing psychological interventions (supportive or counselling therapy, cognitive behaviour …
For correspondence: Dr K Ismail, Academic Department of Psychological Medicine, Institute of Psychiatry, London, UK.
Source of funding: in part, Psychiatry Research Trust, London, UK.