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Journal of Manipulative and Physiological Therapeutics > 2014 > 37 > 7 > 510-521
Journal of Clinical Epidemiology > 2003 > 56 > 3 > 221-229
Journal of Manipulative and Physiological Therapeutics > 2014 > 37 > 7 > 510-521
Journal of Clinical Epidemiology > 2003 > 56 > 3 > 221-229