Paterson, R W
Heywood, W E
Heslegrave, A J
Magdalinou, N K
Andreasson, U
Sirka, E
Bliss, E
Slattery, C F
Toombs, J
Svensson, J
Johansson, P
Fox, N C
Zetterberg, H
Mills, K
Schott, J M
Article History
Received: 12 May 2016
Accepted: 31 July 2016
First Online: 15 November 2016
Competing interests
: The authors declare no conflict of interest.