External url http://onlinelibrary.wiley.com/doi/10.1111/ppe.12063/abstract Cover photo 85686-file.image.gif Forfatter(e) Hauge, Lars Johan, Tom Kornstad, Ragnhild Bang Nes, Petter Kristensen, Lorentz M. Irgens, Leif T. Eskedal, Markus A. Landolt, Margarete E. Vollrath
