| Business | Phone |
| Horizon Research Intl 1930 Bishop Ln, Louisville 40218 | (502) 992-1325 |
| Pacific Institute-Research 1300 S 4th St, Louisville 40208 | (502) 634-3694 |
| Sleep Research 7629 National Tpke, Louisville 40214 | (502) 367-7097 |
| Horizon Research Intl 617 W Main St, Louisville 40202 | (502) 379-6190 |