Each AMBULANCE STATION
| must be controlled by one and only one AMBULANCE SERVICE | |
| must be operationally managing one or more AMBULANCE SERVICE VEHICLE | |
| may be related to one or more AMBULANCE UTILISATION SAMPLE |
| must be controlled by one and only one AMBULANCE SERVICE | |
| must be operationally managing one or more AMBULANCE SERVICE VEHICLE | |
| may be related to one or more AMBULANCE UTILISATION SAMPLE |