Moriwaki, K
Bertin, J
Gough, P J
Orlowski, G M
Chan, F KM
Article History
Received: 24 October 2014
Revised: 30 December 2014
Accepted: 7 January 2015
First Online: 12 February 2015
Competing interests
: JB and PJ are employees of GlaxoSmithKline. All other authors declare no potential conflict of interest.