Funding for this research was provided by:
Bundesministerium für Bildung und Forschung (01GI1008C)
Article History
Received: 16 May 2018
Revised: 25 July 2018
Accepted: 2 September 2018
First Online: 12 September 2018
Compliance with ethical standards
:
: All authors declare that they have no conflicts of interests.
: The DEMPARK/LANDSCAPE study was approved by the Ethics Committee of Philipps University of Marburg (approval numbers 178/07 and 25/11) and, subsequently, by the local ethics committees of the participating centers. Written informed consent was obtained from all the participants before study entry.