Acknowledgements
The ideas in this editorial were discussed at a workshop in Vienna hosted by Sigmund Freud University and held at the Beethoven Hotel, Vienna, in December 2013, and we are grateful for comments from participants including Franca Beccaria, Wim van den Brink, Geoffrey Hunt, Gerry V. Stimson, Julian Strizek, Betsy Thom, and Laura Williamson.
Declaration of interest
The authors report no conflicts of interest. The authors alone are responsible for the content and writing of this article.