Evan Williams · 2001 | ChronoCite

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Evan Williams · 2001 | ChronoCite

← Evan Williams timeline

Jan 1, 2001Documented record79% confidence

Published “The PHQ-9” in Journal of General Internal Medicine — cited 39,672 times.

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Captured 2026-08-18 from Crossref. The archived copy is preserved so this citation survives link rot.