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Journal of Psychosomatic Research > 2012 > 73 > 3 > 180-184
Psychiatry Research > 2006 > 145 > 2-3 > 199-206
Journal of Clinical Epidemiology > 2005 > 58 > 11 > 1134-1141
Journal of Psychosomatic Research > 2012 > 73 > 3 > 180-184
Psychiatry Research > 2006 > 145 > 2-3 > 199-206
Journal of Clinical Epidemiology > 2005 > 58 > 11 > 1134-1141