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Depression (major depressive disorder) - Symptoms and causes
Depressive disorder (depression) - World Health Organization …
Depression: What It Is, Symptoms, Causes, Treatment, and More - Healthline
Depression - National Institute of Mental Health (NIMH)
Depression: What it is, symptoms, causes, treatment, and more
Psychiatry.org - What Is Depression?
Depression: Causes, Symptoms, Types & Treatment - Cleveland Clinic
Depression (major depressive disorder) - Mayo Clinic
Depression - World Health Organization (WHO)
Depression - National Institute of Mental Health (NIMH)