1. Informed consent in complementary and alternative medicine;Ernst;Arch Intern Med,2001
2. Informed consent to chiropractic treatment;Chapman-Smith,1994
3. Code of practice. London: General Chiropractic Council; 1999. p. 3.
4. The handbook of clinical trials and other research;Earl-Slater,2002
5. Manipulation as safe as normal neck movements;Anonymous;Chiropr Rep,2003