Shvets, Elena
Bitsikas, Vassilis http://orcid.org/0000-0002-1731-9910
Howard, Gillian
Hansen, Carsten Gram
Nichols, Benjamin J.
Article History
Received: 30 September 2014
Accepted: 6 March 2015
First Online: 21 April 2015
Competing interests
: The authors declare no competing financial interests.