GfK North America

200 Liberty St

4th Floor, New York, NY 10281

1-888-608-1212 ext. 1

Canada

5700 Explorer Drive

Suite 104, Mississuaga, ON L4W 0C6

1-888-608-1212 ext. 1

European Headquarters

Nordwestring 101, 90419

Nuremberg, Germany

+44 2030 971735