Lindemann, Ulrich http://orcid.org/0000-0001-7095-8239
Article History
Received: 6 August 2018
Revised: 25 January 2019
Accepted: 31 January 2019
First Online: 15 February 2019
Compliance with ethical guidelines
:
: U. Lindemann declares that he has no competing interests.
: The underlying study showing the independence of parameters was conducted in accordance with the Declaration of Helsinki, and the protocol was approved by the ethics committee of the University of Tübingen (578/2011/BO2).