Stöcker, Sarah http://orcid.org/0000-0002-6145-7173
Maurer, Michael
Ruppert, Thomas
Dick, Tobias P http://orcid.org/0000-0003-1367-973X
Article History
Received: 8 March 2017
Accepted: 3 November 2017
First Online: 18 December 2017
Competing interests
: The authors declare no competing financial interests.