1. Birch S: Health human resource planning for the new millennium: Inputs in the production of health, illness and recovery in populations. Can J Nurs Res. 2002, 33: 109-114.
2. Gallagher J E, Wilson N H F: The future dental workforce?. Br Dent J. 2009, 206: 195-200. 10.1038/sj.bdj.2009.114.
3. Laurant M, Reeves D, Hermens R, et al: Substitution of doctors by nurses in primary care. Cochrane Database of Systematic Reviews. 2009, 4: DOI: 10.1002/14651858.CD001271
4. Laurant M, Harmsen J, Wolersheims H, et al: The impact of non-physician clinicians: do they improve the quality and cost-effectiveness of health care services?. Medical Care Research and Review. 2009, 66-DOI: 10.1177/1077558709346277
5. Adult Dental Health Survey 2009. Online information available at: http://www.ic.nhs.uk/statistics-and-data-collections/primary-care/dentistry/adult-dental-health-survey-2009--summary-report-and-thematic-series (accessed April 2014)