Lara D. Veeken · 2001 · 191 citations · 21 references
The introduction of low-impact aerobic exercise programmes for patients with chronic low back pain may reduce the enormous costs associated with its treatment.
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A Study of the Natural History of Back Pain
Martín Roland, Richard Morris · Spine · 1983 · 3.3K citations
Pain Therapy, Pain Medicine, Anatomy +16
Statistics and ethics in medical research: III How large a sample?
David Altman · BMJ · 1980 · 581 citations · Full text