The University of Vienna in Austria; the Université Catholique de Louvain and the Université libre de Bruxelles in Belgium; Charles University in Prague in the Czech Republic; Aarhus University and the University of Copenhagen in Denmark; the Free University of Berlin, Goethe University Frankfurt, the University of Konstanz, the University of Leipzig, the University of Münster and the University of Mannheim in Germany; the National and Kapodistrian University of Athens in Greece; the University of Bologna, the University of Florence and La Sapienza University in Italy; the University of Latvia in Latvia; the University of Amsterdam in the Netherlands; the University of Oslo in Norway; Higher School of Economics and Moscow State University in Russia; the University of Barcelona, the University of Salamanca and Universidad Complutense de Madrid in Spain; Goteborg University in Sweden; the University of Bern and the University of Zurich in Switzerland;