1. The House of Lords, What is Complementary and Alternative Medicine? Growing Use of CAM in the United Kingdom Science and Technology – Sixth Report,2000
2. A systematic literature review of complementary and alternative medicine prevalence in EU;Eardley;Forschende Komplementärmedizin,2006
3. Use and expenditure on complementary medicine in England: a population based survey;Thomas;Complement. Ther. Med.,2001
4. The BBC survey of complementary medicine use in the UK;Ernst;Complement. Ther. Med.,2000
5. Complementary and alternative medicine use in England: results from a national survey;Hunt;Int. J. Clin. Pract.,2010