Barraclough, Thomas W.
Blackford, Jane R.
Liebenstein, Stefan
Sandfeld, Stefan http://orcid.org/0000-0001-9560-4728
Stratford, Tim J.
Weinländer, Gerhard
Zaiser, Michael
Article History
Received: 14 July 2016
Accepted: 24 October 2016
First Online: 21 November 2016
Competing interests
: The authors declare no competing financial interests.