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Koenig, J. ., Kohls, E. ., Moessner, M. ., Lustig, S. ., Bauer, S. ., Becker, K. ., … ProHEAD, C. . (2021). The impact of COVID-19 related lockdown measures on self-reported psychopathology and health-related quality of life in German adolescents. European Child & Adolescent Psychiatry. https://doi.org/10.1007/s00787-021-01843-1 (Original work published 2021)

Dogan-Sander, E. ., Kohls, E. ., Baldofski, S. ., & Rummel-Kluge, C. . More Depressive Symptoms, Alcohol and Drug Consumption: Increase in Mental Health Symptoms Among University Students After One Year of the COVID-19 Pandemic. Frontiers in Psychiatry, 12, 790974. https://doi.org/10.3389/fpsyt.2021.790974 (Original work published 2021)