Püttmann, Sophie
Koch, Janina
Steinacker, Jochen Paul
Schmidt, Stefan Andreas
Seufferlein, Thomas
Kratzer, Wolfgang
Schmidberger, Julian
Manfras, Burkhard
Article History
Received: 15 February 2018
Accepted: 27 November 2018
First Online: 13 December 2018
Ethics approval and consent to participate
: The study was conducted in conformity with the principles of the Helsinki Declaration and Good Clinical Practice and was approved by the Ulm University Ethics Committee (No. 331–15, 1 September 2015). All participants enrolled in the study gave their written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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