Brendel, M
Jaworska, A
Herms, J
Trambauer, J
Rötzer, C
Gildehaus, F-J
Carlsen, J
Cumming, P
Bylund, J
Luebbers, T
Bartenstein, P
Steiner, H
Haass, C
Baumann, K
Rominger, A
Article History
Received: 22 December 2014
Revised: 31 March 2015
Accepted: 13 April 2015
First Online: 9 June 2015
Competing interests
: CH is an advisor of F. Hoffmann-La Roche. JB, TL and KB are employees of F. Hoffmann-La Roche. PB and AR have received speaking honoraria from Piramal Imaging. The remaining authors declare no conflict of interest.