Kiessl, Gundula R. R.
Laessle, Reinhold G.
Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (la681-24-1)
Article History
Received: 4 March 2016
Accepted: 16 August 2016
First Online: 29 August 2016
Compliance with ethical standards
:
: On behalf of all authors, the corresponding author states that there is no conflict of interest.
: The study was approved by the ethics committee of the University of Trier in April 2012.
: Informed consent was obtained from all individual participants included in the study.