Armbruster, M.
Rist, M.
Seifert, S.
Frommherz, L.
Weinert, C.
Mack, C.
Roth, A.
Merz, B.
Bunzel, D.
Krüger, R.
Kulling, S.
Watzl, B.
Bub, A.
Funding for this research was provided by:
Bundesministerium für Ernährung und Landwirtschaft
Article History
Received: 7 November 2017
Accepted: 29 June 2018
First Online: 4 July 2018
Compliance with ethical standards
:
: The study was approved by the ethics committee of the State Medical Chamber of Baden- Württemberg and was registered at the German Clinical Study Register (DRKS00004890). Each subject provided fully informed and written consent before participation in accordance with the Declaration of Helsinki Principles.
: On behalf of all authors, the corresponding author states that there is no conflict of interest.