Article History
Received: 12 March 2015
Revised: 15 June 2015
Accepted: 25 June 2015
First Online: 4 August 2015
Competing interests
: LVK has within the preceding 3 years been a consultant for Lundbeck and AstraZeneca. MV has been a consultant for Lundbeck, AstraZeneca, Eli Lilly and Servier. The remaining authors declare no conflict of interest.