Ivanov, Peter A.
Vitanov, Nikolay V.
Singer, Kilian
Article History
Received: 22 February 2016
Accepted: 26 May 2016
First Online: 16 June 2016
Change Date: 19 July 2016
Change Type: Update
Change Details: The version of this Article previously published omitted Kilian Singer as a corresponding author. Correspondence and request for materials should also be addressed to ks@uni-kassel.de. This has now been corrected in the HTML and PDF versions of the Article.
Competing interests
: The authors declare no competing financial interests.