Please assess the completion status of the following clinical trial:

Trial Title: Short Term Effect of Vitamin D Supplementation on the Clinical Outcomes in Patients Undergoing Valve Replacement Surgery

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

Eligibility Criteria:
Inclusion Criteria:~* patients undergoing mechanical valve replacement surgery~Exclusion Criteria:~* combined valvular replacement surgery and Coronary Artery Bypass Graft (CABG) surgery~* valvular replacement redo~* valvular replacement surgery secondary to infective endocarditis~* on dialysis~* ALT levels 2-3 times higher than normal range~* CHD,~* impaired gastrointestinal function~* indication for vitamin D supplementation within the prior month~* hypercalcemia defined as total calcium \>10.4 mg/dl~* hyperphosphatemia defined as serum phosphate \> 4.5 mg/dl~* pregnancy and lactation.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 65 Years
- Healthy Volunteers: f

Study Arms:
- Alfacalcidol (Type: EXPERIMENTAL): Patients allocated to the alfacalcidol group received 2 mcg of oral Bone Care© soft gelatin capsules once daily with food starting from the day of admission till the end of hospital stay.
- Control (Type: NO_INTERVENTION): Control group were exposed to the same conditions as the treatment group except they were not given one-alfacalcidol.

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