1. Vestbo, J. et al. Global strategy for the diagnosis, management, and prevention of chronic obstructive pulmonary disease. Am. J. Respir. Crit. Care Med. 187, 347–365 (2013).
2. Jamie G. UK–QOF Database [Internet]. Gpcontract.co.uk. 2015 [cited 16 November 2015]. Available from:
http://www.gpcontract.co.uk/
.
3. Gov.uk. An Outcomes Strategy for COPD and Asthma: NHS Companion Document— Publications—GOV.UK [Internet]. 2012 [cited 16 November 2015]. Available from:
https://www.gov.uk/government/publications/an-outcomes-strategy-for-copd-and-asthma-nhs-companion-document
.
4. Gudmundsson, G. et al. Mortality in COPD patients discharged from hospital: the role of treatment and co-morbidity. Respir. Res. 7, 109 (2006).
5. Nice.org.uk. Chronic Obstructive Pulmonary Disease in Over 16s: Diagnosis and Management|1-Recommendations|Guidance and Guidelines|NICE [Internet]. 2010 [cited 12 November 2015]. Available from:
http://www.nice.org.uk/guidance/cg101/chapter/1-recommendations
.