Wenhui Dai

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OBJECTIVE To study lumbar vertebral degenerations of coal miners with low back pain. METHODS 40 underground miners with low back pain, aged from 30 to 50 years and employed for a length from 10 to 30 years, were taken as observation group. 30 ground workers without low back pain but with almost the same age, employment length and height etc. were selected(More)
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