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. 2023 Feb 23;270(5):2349–2359. doi: 10.1007/s00415-023-11608-2

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© The Author(s) 2023

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — Geographic distribution of the participating centers in Germany, Switzerland and Austria. (

© OpenStreetMap, openstreetmap.org/copyright). 1: University Medical Center Schleswig–Holstein, Campus Kiel, 2: University Medical Center Schleswig–Holstein, Campus Lübeck, 3: Charité Universitätsmedizin Berlin, 4: University Medical Center Göttingen, 5: University Medical Center Knappschaftskrankenhaus Bochum, 6: University Hospital Cologne, 7: University Hospital Tübingen, 8: University Hospital Augsburg, 9: University Hospital Basel, 10: University Medical Center Innsbruck