- Correspondence to Dr Hanna Fröhlich, Department of Cardiology, Angiology, and Pulmonology, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany;
- Received October 9, 2018
- Revised January 22, 2019
- Accepted February 2, 2019
- First published February 21, 2019.
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