| Business | Phone |
| Alzheimer's Treatment & Rsrch 640 Jackson St, St Paul 55101 | (651) 221-2743 |
| Prism Research 1000 Westgate Dr, St Paul 55114 | (651) 641-2900 |
| Prism Research 1451 18th St Nw, St Paul 55112 | (651) 636-2001 |
| Ratner Research 1011 Carlton Dr, St Paul 55126 | (651) 330-9630 |