1 Division of Angiology, Center for Vascular Medicine and Department of Medicine III, University Hospital "Carl Gustav Carus", Technische Universität Dresden, Fetscherstrasse 74, 01307, Dresden, Germany.
2 Department of Emergency Medicine, Mater Misericordiae University Hospital, Eccles Street, Dublin 7, Ireland.
3 Haematology Department, Mater Misericordiae University Hospital, Eccles Street, Dublin 7, Ireland.
4 Division of Angiology, Center for Vascular Medicine and Department of Medicine III, University Hospital "Carl Gustav Carus", Technische Universität Dresden, Fetscherstrasse 74, 01307, Dresden, Germany. jan.beyer@uniklinikum-dresden.de.