Frank, J
Lang, M
Witt, S H
Strohmaier, J
Rujescu, D
Cichon, S
Degenhardt, F
Nöthen, M M
Collier, D A
Ripke, S
Naber, D
Rietschel, M
Article History
First Online: 3 June 2014
Competing interests
: David A Collier is a full time employee of Eli Lilly and Company Ltd. The other authors have no conflicts of interest or possible conflicts of interest to declare.