title: The complexity of complementary medicine: chiropractic for back pain.
authors.forename: E
authors.initials: E
authors.lastname: Ernst
mesh_terms: D001416:Back Pain / Q000628:therapy*; D002684:Chiropractic / Q000191:economics; D000529:Complementary Therapies / Q000009:adverse effects / Q000191:economics; D003362:Cost-Benefit Analysis; D006801:Humans; D026882:Manipulation, Chiropractic / Q000009:adverse effects; D012307:Risk Factors; D016896:Treatment Outcome