| Relationships | Role | Relationship Start | Relationship End |
| Tds Holdings, Inc. | Parent | 1/29/1999 | 8/31/2001 |
| Trek Diagnostic Systems Limited | Subsidary | 1/29/1999 | 8/31/2001 |
| Relationships | Role | Relationship Start | Relationship End |
| Tds Holdings, Inc. | Parent | 1/29/1999 | 8/31/2001 |
| Trek Diagnostic Systems Limited | Subsidary | 1/29/1999 | 8/31/2001 |