Griffiths, K R
Grieve, S M
Kohn, M R
Clarke, S
Williams, L M
Korgaonkar, M S
Article History
Received: 24 May 2016
Revised: 25 August 2016
Accepted: 20 September 2016
First Online: 8 November 2016
Competing interests
: LMW has received consultant fees from Humana. SMG has previously received consultant fees from Brain Resource. The remaining authors declare no conflicts of interest.