Stengel, C
Newman, S P
Day, J M
Chander, S K
Jourdan, F L
Leese, M P
Ferrandis, E
Regis-Lydi, S
Potter, B V L
Reed, M J
Purohit, A
Foster, P A
Article History
Revised: 4 March 2014
Accepted: 13 March 2014
First Online: 24 June 2014
Competing interests
: BVLP and MJR were consultants to IPSEN Ltd. AP is a consultant to IPSEN Ltd. The remaining authors declare no conflict of interest.