Please assess the completion status of the following clinical trial:

Trial Title: Wheezing in Black Preterm Infants: Impact of Vitamin D Supplementation Strategy

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

Eligibility Criteria:
Inclusion criteria:~1. 28 0/7-36 6/7 weeks gestational age (GA) at birth;~2. family identifies the child as black or African American;~3. \< 28 days of supplemental oxygen (subsequent oxygen therapy for \< 72 hrs for a brief subsequent illness or surgery will be allowed);~4. admitted to a participating site NICU, special care nursery, transitional care nursery, or well-baby nursery as a neonate; and~5. \< 40 weeks corrected GA at enrollment.~Exclusion criteria:~1. BPD (\> 28 days of supplemental oxygen);~2. pre-existing diagnosis of moderate to severe osteopenia of prematurity and/or alkaline phosphatase \> 700;~3. history of fracture;~4. gastrointestinal surgery, including for NEC;~5. known gastrointestinal malabsorption;~6. major congenital anomaly;~7. congenital pulmonary or airway disorder (e.g., cystic fibrosis, tracheomalacia, swallowing disorder, bronchopulmonary sequestration);~8. documented wheezing or stridor prior to enrollment;~9. previous vit. D supplementation with \> 400 IU/day;~10. family plans to move more than 60 miles from CWRU or other pre-defined radius at other sites;~11. baseline hypo- or hypercalcemia, hypo- or hyperphosphatemia; and~12. baseline 25(OH) D level \< 10 ng/ml.

- Gender: ALL
- Minimum Age: None
- Maximum Age: 1 Year
- Healthy Volunteers: f

Study Arms:
- Sustained (Type: ACTIVE_COMPARATOR): Infants will remain on 400 IU/day of cholecalciferol until 6 months of age adjusted for prematurity, regardless of dietary intake
- Diet-Limited (Type: PLACEBO_COMPARATOR): Infants will receive placebo once their dietary intake of vitamin D has exceeded 200 IU/day

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