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2. Back Pain Prevalence and Visit Rates
3. Physician Office Visits for Low Back Pain
4. Korean Acupuncture & Moxibustion Medicine Society. Clinical guideline on acupuncture treatment for low back pain. 2013. Available from: http://www.nckm.or.kr/main/module/practice-Guide/view.do?guide_idx=97&menu_idx=14
5. Hip pain in the radiologically normal hip