Mohr, A., L. Dannerbeck, T. J. Lange, M. Pfeifer, S. Blaas, B. Salzberger, F. Hitzenbichler, and M. Koch. “Cardiopulmonary Exercise Pattern in Patients With Persistent Dyspnoea After Recovery from COVID-19”. Multidisciplinary Respiratory Medicine, Vol. 16, Feb. 2021, doi:10.4081/mrm.2021.732.