1. Goodwin M, Sanders C, Pretty I. A study of the provision of hospital based dental general anaesthetic services for children in the Northwest of England: Part 1. A comparison of service delivery between six hospitals. BMC Oral Health. 2015:15.
2. Ní Chaollaí A, Robertson S, Dyer T, Balmer R, Fayle S. An evaluation of paediatric dental general anaesthesia in Yorkshire and the Humber. Br Dent J. 2010;209:E20.
3. Department of Health: A Conscious Decision: A Review of the Use of General Anaesthesia and Conscious Sedation in Primary Dental Care. London; 2000. http://webarchive.nationalarchives.gov.uk/20130107105354/http://www.dh.gov.uk/prod_consum_dh/groups/dh_digitalassets/@dh/@en/documents/digitalasset/dh_4019200.pdf . Accessed 30 March 2015.
4. Davies D, Harrison M, Roberts G. UK National Clinical Guidelines in Paediatric Dentistry Guideline for the Use of General Anaesthesia (GA) in Paediatric. Dentistry. 2008;2008:1–11.
5. Creswell JW, Plano Clark VL. Designing and Conducting Mixed Methods Research. Thousand Oaks London New Delhi: Sage Publications; 2007.