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A placebo controlled double blind trial to estimate the effectiveness of pulsed short wave therapy for osteoarthritis, hip and knee pain
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Comparison of medical abortion with surgical vacuum aspiration: Women's preferences and acceptability of treatment
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Comparison of chorionic villus sampling and amniocentesis for fetal karyotyping at 10–13 weeks' gestation
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Developing a valid and reliable measure of health outcome for patients with low back pain
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