Funding for this research was provided by:
German Federal Ministry of Education and Research (01E00802)
Text and Data Mining valid from 2020-04-01
Received: 29 October 2019
Accepted: 14 March 2020
First Online: 1 April 2020
Ethics approval and consent to participate
: The study was approved by the Institutional Review Board of Hannover Medical School (MHH, approval number 3366-2016). After giving their written informed consent, each participant underwent a medical check-up to exclude active infections and an electrocardiogram in rest was evaluated by an experienced cardiologist to make sure that participants could join the exhaustion test.
: We declare that all authors concur with the submission of this manuscript.
: None of the authors of the given manuscript has any conflicts of financial interest to disclose regarding the aforementioned study. The authors declare that they have no competing interests.