Clifton, N E
Pocklington, A J
Scholz, B
Rees, E
Walters, J T R
Kirov, G
O'Donovan, M C
Owen, M J
Wilkinson, L S
Thomas, K L
Hall, J
Article History
Received: 1 August 2016
Revised: 13 September 2016
Accepted: 11 October 2016
First Online: 13 December 2016
Competing interests
: The authors declare no conflict of interest.