Please assess the completion status of the following clinical trial:

Trial Title: The Length of Cervical Collar Treatment for Traumatic Sub-axial Fractures

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Patients with a newly diagnosed (within 5 days of injury) fracture in vertebra C3-C7 with SLIC score 1-3~* Patients must be abel to give their consent to participate in the study~Exclusion Criteria:~* Unstable cervical fractures in need of surgery~* SLIC score \>3~* Fractures of the spinous process and the transverse process in the cervical spine~* Stable fractures in in the C3-C7 vertebra combined with fractures of the C0-C2 vertebra~* Pathological fractures in the cervical spine

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 85 Years
- Healthy Volunteers: f

Study Arms:
- 6 weeks (Type: OTHER): This group of patients will be treated for 6 weeks with a cervical collar (Miami J collar - Össur)
- 12 weeks (Type: OTHER): This group of patients will be treated for 12 weeks with a cervical collar ( (Miami J collar - Össur)

Based on this trial design, predict the completion outcome and termination type (if applicable).