Please assess the completion status of the following clinical trial:

Trial Title: Effect of Vitamin D Supplementation on Infliximab Response in Patients With Crohn's Disease

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:~* moderate-to-severe CD~* Treated with Infliximab~* bio-naïve at the time of diagnosis~Exclusion Criteria:~* had recent supplementation of vitD3~* had prior or concomitant use of other biologic agent, glucocorticoid and/or immunomodulators at the time of enrollment~* pregnant~* had cognitive/developmental disorders that affected their ability to complete the study procedures~* had medical illness or therapies potentially affecting bone, nutrition or growth status

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

Study Arms:
- Vitamain D (Type: None): This group of patients were supplemented with 125IU/d Vitamin D
- Control (Type: None): The other group did not receive the supplementation of 125IU/d Vitamin D

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