Funding for this research was provided by:
Medizinischen Hochschule Hannover
Received: 5 April 2020
Accepted: 23 June 2020
First Online: 29 July 2020
Ethics approval and consent to participate
: The study complies with the ethical principles of the Declaration of Helsinki (1964, including its later amendments) and was approved by the Ethics Committee of the Hannover Medical School (NEKTOR-Registry: 2842-2015). Written informed consent was signed by all participants prior to study inclusion.
: Not applicable.
: The authors declare that they have no competing interests.