Acknowledgements
The authors would like to thank Ramona Täglich, Betti Schopp, Katja Stumper, Ferdinand Berzdorf, Lukas Viestädt, Jamie Nagel, Felix Schlüter and Florian Torka for their excellent work and their valuable support with the measurements. We further thank Thomas Dresler for his help in checking the paper linguistically and grammatically. Finally, we thank all patients for their participation in the study.Supplementary data to this article can be found online at 