Albrecht, K.
Callhoff, J.
Zink, A.
Article History
First Online: 12 August 2019
Compliance with ethical guidelines
:
: K. Albrecht, J. Callhoff and A. Zink declare that they have no competing interests.
: All the investigations on humans described were carried out with the consent of the competent ethics committee, in accordance with national law and in accordance with the Helsinki Declaration of 1975 (as amended). A declaration of consent is available from all patients involved.