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Risk of depression

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Source: PHQ-9 copyright 1999, Pfizer, permission granted. The PHQ-9 assessment is adapted from PRIME MD TODAY and developed by RL Spitzer, JBW Williams, K Kroenke, et al.

Primary Medical Reviewer Adam Husney, MD - Family Medicine
Specialist Medical Reviewer Lisa S. Weinstock, MD - Psychiatry
Last Updated August 27, 2008

WebMD Medical Reference from Healthwise

Last Updated: August 27, 2008
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