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Journal of Clinical Epidemiology > 1998 > 51 > 2 > 99-106
Journal of Clinical Epidemiology > 1998 > 51 > 2 > 137-145
Social Science & Medicine > 1995 > 41 > 10 > 1411-1415
Journal of Clinical Epidemiology > 1998 > 51 > 2 > 99-106
Journal of Clinical Epidemiology > 1998 > 51 > 2 > 137-145
Social Science & Medicine > 1995 > 41 > 10 > 1411-1415