Disclosure
Johannes Sperzel is employed by Hospital Kerckhoff Klinik GmbH, Ingo Staudacher is employed by Medical University Hospital Heidelberg, Olaf Goeing is employed by Sana-Hospital Lichtenberg, Martin Stockburger is employed by Havelland Kliniken GmbH, and Thorsten Meyer is employed by Universität Bielefeld; none of these authors received financial support for contributing to the writing of this letter. Ana Sofia Oliveira Gonçalves, Hanna Sydow, Tonio Schoenfelder, and Volker Amelung are employed by inav – privates Institut für angewandte Versorgungsforsc-hung GmbH [inav – Institute for Applied Health Services Research GmbH]; these four authors received financial support from Zoll GmbH for contributing to the writing of this letter. The authors report no other conflicts of interest in this communication.