1. Royal College of Psychiatrists. Who Cares Wins. Improving the Outcome for Older People Admitted to the General Hospital: Guidelines for the Development of Liaison Mental Health Services for Older People. London, 2005. http://www.rcpsych.ac.uk/PDF/WhoCaresWins.pdf .
2. National Institute for Health and Clinical Excellence. Depression in Adults with a Physical Health Problem: Treatment and Management. London: NICE, 2009.
3. National Institute for Health and Clinical Excellence. Depression in Adults (update). Depression: The Treatment and Management of Depression in Adults. National Clinical Practice Guideline 90. London: NICE, 2009.
4. NHS Wales. 1000 Lives+Mental Health - Identifying Depression in Hospital Settings, 2012. http://www.1000livesplus.wales.nhs.uk/mh-depression (29 February 2016, date last accessed).
5. Depression in older people in the general hospital: a systematic review of screening instruments