PT - JOURNAL ARTICLE AU - Thomas J Currid TI - Cognitive behavioural group therapy is moderately effective for depression, with continued effect for up to 6 months but not beyond AID - 10.1136/eb-2012-100767 DP - 2012 Aug 01 TA - Evidence Based Nursing PG - ebnurs-2012-100767 4099 - http://ebn.bmj.com/content/early/2012/08/20/eb-2012-100767.short 4100 - http://ebn.bmj.com/content/early/2012/08/20/eb-2012-100767.full