1. NHS Scotland and The Scottish Government. Polypharmacy Guidance, October 2012. http://www.central.knowledge.scot.nhs.uk/upload/Polypharmacy%20full%20guidance%20v2.pdf
2. Barber N , Alldred DP , Raynor DK , et al. Care homes’ use of medicines study: prevalence, causes and potential harm of medication errors in care homes for older people. http://qualitysafety.bmj.com/content/18/5/341.full
3. NHS Wales Health Board. Polypharmacy: Guidance for Prescribing in Frail Adults Practical guide, full guidance, BNF sections to target. May 2013. http://www.wales.nhs.uk/sites3/documents/814/PrescribingForFrailAdults-ABHBpracticalGuidance%5BMay2013%5D.pdf
4. NHS Scotland and The Scottish Government. Polypharmacy Guidance, March 2015. http://www.sehd.scot.nhs.uk/publications/DC20150415polypharmacy.pdf