1. Washington Center for Equitable Growth, 1156 15th Street NW, Suite 700 Washington, DC 20005, USA
2. McCourt School of Public Policy, Georgetown University, Old North, Suite 311, 37th and O Streets, NW, Washington, DC, 20057 USA
3. Economics - University of North Carolina at Asheville, One University Heights, Asheville, North Carolina 28804-3251 USA
4. Economics - University of Massachusetts Amherst, 412 North Pleasant Street, Amherst, MA 01002 USA