Please assess the completion status of the following clinical trial:

Trial Title: Vitamin D and Walking Ability in Patients With Peripheral Artery Occlusive Disease

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: TRIPLE
- Phase: PHASE4
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* peripheral artery obliterative disease Rutherford 1 to 3~* informed consent~* motivation~Exclusion Criteria:~* inability of treadmill walking~* not motivated~* female patients: childbearing age (age limit 49 years)~* PTA or surgical revascularisation within 3 months before study entry~* cancer, life expectancy lower than 6 months~* ongoing therapy with Vitamin D~* 25-OH-Vitamin D level 125 nmol/l and above~* contraindications for Vitamin D intake (sarcoidosis, acute lung tbc, hypercalcemia, intake of Vitamin D analogs~* contraindications for ultrasound contrast agent (known hypersensitivity, recent acute coronary syndrome, unstable ischemic heart disease, after PTCA, heart insufficiency NYHA III or IV, severe rhythm disorders, known right- left shunt, severe pulmonary artery hypertension, adult respiratory distress syndrome

- Gender: ALL
- Minimum Age: None
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Vitamin D (Type: ACTIVE_COMPARATOR): None
- Placebo (Type: PLACEBO_COMPARATOR): None

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