Jiang, Xueyan
Faber, J.
Giordano, I.
Machts, J.
Kindler, Ch.
Dudesek, A.
Speck, O.
Kamm, Ch.
Düzel, E.
Jessen, F.
Spottke, A.
Vielhaber, St.
Boecker, H.
Klockgether, T.
Scheef, L.
Article History
First Online: 17 August 2019
Compliance with Ethical Standards
: The study was approved by the local ethics committees in Bonn and Magdeburg. All subjects provided written informed consent before participation.
: The authors declare that they have no conflict of interest.