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