Verbelen, M
Collier, D A
Cohen, D
MacCabe, J H
Lewis, C M
Article History
Received: 23 September 2014
Revised: 18 November 2014
Accepted: 19 December 2014
First Online: 3 March 2015
Competing interests
: David A Collier is a full time employee of Eli Lilly and Company Ltd, and a visiting Professor at King’s College London. David A Collier also holds stock in Eli Lilly and Company. Moira Verbelen is funded by a studentship from the Medical Research Council and Eli Lilly and Company Ltd. The remaining authors declare no conflict of interest.