1. Health services research related to chiropractic;Mootz;J Manip Physiol Ther,1997
2. Chiropractic health care;Von Kuster,1980
3. Unconventional medicine in the United States;Eisenberg;N Engl J Med,1993
4. The outcomes and costs of care for acute low back pain among patients seen by primary care practitioners, chiropractors, and orthopedic surgeons;Carey;The North Carolina Back Pain Project. N Engl J Med,1995
5. Prevalence and cost of alternative medicine in Australia;MacLennan;Lancet,1996