1. a Marketing and Consumer Research , Technische Universität München , Alte Akademie 16, D-85354, Freising-Weihenstephan, Germany
2. b Department of Food Economics and Consumption Studies , University of Kiel , Olshausentraße 40, D-24098, Kiel, Germany
3. c Robert-Koch-Institute , Seestraße 10, D-13353, Berlin, Germany
4. d Department of Agricultural Economics , University of Goettingen , Platz der Göttinger Sieben 5, D-37073, Göttingen, Germany
5. e Department of Agricultural Economics , University of Kiel , Olshausenstraße 40, 24098, Kiel, Germany