| Relationships | Role | Relationship Start | Relationship End |
| Bt Vordertaunus Verwaltungs- Und Beteiligungsgesellschaft Mbh | Parent | 12/14/2007 | 7/28/2009 |
| Bt Milford (Cayman) Limited | Parent | 12/14/2007 | 7/28/2009 |
| Bt Milford (Cayman) Limited | Parent | 5/1/1998 | 12/31/2000 |