Lorenz, R. http://orcid.org/0000-0001-9749-3005
Stechemesser, B.
Reinpold, W.
Mayer, F.
Köckerling, F.
Schröder, W.
Fortelny, R.
Article History
Received: 3 February 2017
Accepted: 7 February 2017
First Online: 28 February 2017
Compliance with ethical guidelines
:
: R. Lorenz, B. Stechemesser, W. Reinpold, F. Mayer, F. Köckerling, W. Schröder, and R. Fortelny declare that they have no competing interests.
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2008.