Please assess the completion status of the following clinical trial:

Trial Title: Calcifediol in the Treatment of COVID 19

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: COHORT
- Primary Purpose: None
- Time Perspective: RETROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Age ≥ 18 and \< 90 years.~* Diagnosis confirmed by positive polymerase chain reaction (PCR) for COVID-19.~* Radiological image compatible with pulmonary involvement by COVID-19.~* Admission to Reina Sofia university Hospital (HURS) Pneumology Department.~Exclusion Criteria:~* Patients for whom electronic medical record data cannot be collected.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: None

Study Arms:
- Calcifediol (Type: None): None
- Best therapy available (Type: None): None

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