1. Andersson GB: Epidemiological features of chronic low-back pain. Lancet. 1999, 354 (9178): 581-585. 10.1016/S0140-6736(99)01312-4.
2. Bigos S, Bowyer O, Braen G, Brown G, Deyo R, Haldeman S, John L, Hart D, Ernest W, Johnson M, Robert B, Keller M, Daniel K, Kido M: Acute low back problems in adults: assessment and treatment. Agency for Health Care Policy and Research, Clin Pract Guidel Quick Ref Guide Clin. 1994, iii-iv. 1-25, 14
3. Korean National Health & Nutrition survey. 2007, [
http://knhanes.cdc.go.kr/
]
4. Chou R, Qaseem A, Snow V, Casey D, Cross JT, Shekelle P, Owens DK, Clinical Efficacy Assessment Subcommittee of the American College of P, American College of P, American Pain Society Low Back Pain Guidelines P: Diagnosis and treatment of low back pain: a joint clinical practice guideline from the American College of Physicians and the American Pain Society. Ann Intern Med. 2007, 147 (7): 478-491.
5. Witt CM, Jena S, Selim D, Brinkhaus B, Reinhold T, Wruck K, Liecker B, Linde K, Wegscheider K, Willich SN: Pragmatic randomized trial evaluating the clinical and economic effectiveness of acupuncture for chronic low back pain. American journal of epidemiology. 2006, 487-496. 10.1093/aje/kwj224.