A 4-item measure of depression and anxiety: Validation and standardization of the Patient Health Questionnaire-4 (PHQ-4) in the general population
Bernd Löwe(Universität Hamburg), Elmar Brähler(Johannes Gutenberg University Mainz), Katja Wingenfeld(Centre for Mental Health), Heide Glaesmer(Leipzig University), Antonius Schneider(Heidelberg University), Inka Wahl(Universität Hamburg), Carsten Spitzer(Klinik und Poliklinik für Psychosomatische Medizin und Psychotherapie), Matthias Rose(Humboldt-Universität zu Berlin)
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