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)