Behrendt, Lars
Brejnrod, Asker
Schliep, Martin
Sørensen, Søren J
Larkum, Anthony W D
Kühl, Michael
Article History
Received: 23 September 2014
Revised: 14 December 2014
Accepted: 22 December 2014
First Online: 10 February 2015
Competing interests
: The authors declare no conflict of interest