Angst, J. ., Rössler, W. ., -Gross, A. . , V, Angst, F. ., Wittchen, H. ., Lieb, R. ., … Vandeleur, C. . (2019). Differences between unipolar mania and bipolar-I disorder: Evidence from nine epidemiological studies. Bipolar Disorders, 21(5), 437-448. https://doi.org/10.1111/bdi.12732

Imperiale, M. ., Lieb, R. ., Calkins, M. ., & Meinlschmidt, G. . (2021). Multimorbidity networks of mental disorder symptom domains across psychopathology severity levels in community youth. Journal of Psychiatric Research, 141, 267-275. https://doi.org/10.1016/j.jpsychires.2021.07.010