Austria,
Denmark,
Germany,
Netherlands,
Sweden,
Switzerland, and
United Kingdom
In United States:
Alabama,
California,
Colorado,
District of Columbia,
Georgia,
Hawaii,
Idaho,
Indiana,
Kansas,
Kentucky,
Maine,
Massachusetts,
Michigan,
Minnesota,
Mississippi,
Nebraska,
Nevada,
New Hampshire,
New Jersey,
New Mexico,
New York,
North Carolina,
North Dakota,
Ohio,
Oklahoma,
Oregon,
Pennsylvania,
Rhode Island,
Texas,
Utah,
Vermont,
Virginia,
Washington,
West Virginia,
Wisconsin, and
Wyoming