1. Eisenberg DM, Kessler RC, Foster C, Norlock FE, Calkins DR, Delbanco TL (1993) Unconventional medicine in the United States. New Engl J Med 328: 246–252
2. Kamerow D (2007) Wham, bam, thank you CAM. BMJ 335: 347
3. Ernst E, Pittler MH, Wider B, Boddy K (2006) The desktop guide to complementary and alternative medicine. 2nd edition. Elsevier, Edinburgh
4. Ernst E (2004) Randomised clinical trials: unusual designs. Perfusion 17: 416–421
5. Wootton D (2006) Bad Medicine. Oxford University Press, Oxford