| Business | Phone |
| Cemcom Corp 4100 Pistorio Rd, Baltimore 21229 | (410) 247-0012 |
| Genox Corp 1414 Key Hwy # 300, Baltimore 21230 | (410) 347-7616 |
| Re Protect 703 Stags Head Rd, Baltimore 21286 | (410) 337-8377 |
| I H Svc Corp 1831 Portal St # E, Baltimore 21224 | (410) 633-4000 |
| Johns Hopkins University 725 N Wolfe St # 813, Baltimore 21205 | (410) 955-3024 |
| Lim Technology 4625 Wilkens Ave, Baltimore 21229 | (410) 242-9315 |
| Neurotron Inc 1501 Sulgrave Ave # 203, Baltimore 21209 | (410) 664-0800 |
| Omni Research Inc 1501 Sulgrave Ave, Baltimore 21209 | (410) 542-1385 |
| Pharma-Tech Research Corp 6807 York Rd, Baltimore 21212 | (410) 377-7018 |
| Prevention Program 5200 Eastern Ave # 500w, Baltimore 21224 | (410) 550-3438 |
| Friends Research Institute Inc 505 Baltimore Ave, Baltimore 21204 | (410) 823-5116 |