1. Assistant professor of marketing at the Tippie College of Business, University of Iowa, 21 E. Market Street, Iowa City, IA 52242, USA
2. Associate professor of marketing at the Wisconsin School of Business, University of Wisconsin–Madison, 975 University Avenue, Madison, WI 53706, USA
3. Professor of marketing at the BI Norwegian Business School, Nydalsveien 37, 0484 Oslo, Norway