Hounkpatin, Kpade O. L.
Schmidt, Karsten http://orcid.org/0000-0003-0337-3024
Stumpf, Felix
Forkuor, Gerald
Behrens, Thorsten
Scholten, Thomas http://orcid.org/0000-0002-4875-2602
Amelung, Wulf http://orcid.org/0000-0002-4920-4667
Welp, Gerhard
Funding for this research was provided by:
German Federal Ministry of Education and Research
Article History
Received: 28 July 2017
Accepted: 18 June 2018
First Online: 2 July 2018
Competing Interests
: The authors declare no competing interests.