The association between loneliness and depressive symptoms among adults aged 50 years and older: a 12-year population-based cohort study - The Lancet Psychiatry
Long-term depression in the CNS | Nature Reviews Neuroscience
PDF) Psychological and work-related outcomes after inpatient multidisciplinary rehabilitation of chronic low back pain: a prospective randomized controlled trial
Long-Term Depression and Depotentiation in the Sensorimotor Cortex of the Freely Moving Rat
NIMH » Chronic Illness and Mental Health: Recognizing and Treating Depression