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Journal of Affective Disorders > 1997 > 46 > 3 > 303-308
Journal of Clinical Epidemiology > 1995 > 48 > 9 > 1109-1118
Journal of Affective Disorders > 1997 > 46 > 3 > 303-308
Journal of Clinical Epidemiology > 1995 > 48 > 9 > 1109-1118