1. Mead GE Morley W Campbell P (2009) Exercise for depression. Cochrane Database Syst Rev (3), CD004366.
2. National Institute for Health and Clinical Excellence (2009) Depression: management of depression in primary and secondary care. NICE clinical guideline 90 (National Institute for Health and Clinical Excellence, London).
3. Department of Health (2001) Exercise referral systems: a National Quality Assurance Framework (Department of Health, London) http://www.dh.gov.uk/assetRoot/04/07/90/09/04079009.pdf (accessed 25 October 2010).
4. Mental Health Foundation (2009) Moving on up (Mental Health Foundation, London) http://www.mentalhealth.org.uk/publications/?entryid5=73298&p=3&char=M (accessed 25 October 2010).
5. Effectiveness of exercise-referral schemes to promote physical activity in adults: systematic review