A 4-item measure of depression and anxiety: Validation and standardization of the Patient Health Questionnaire-4 (PHQ-4) in the general populationBernd Löwe, Elmar Brähler, Heide Glaesmer et al.|Journal of Affective Disorders|2009Cited by 2.5k
Standardization of depression measurement: a common metric was developed for 11 self-report depression measuresInka Wahl, Matthias Rose, Bernd Löwe et al.|Journal of Clinical Epidemiology|2013Cited by 191