Please assess the completion status of the following clinical trial:

Trial Title: Bacteriophage Therapy of Difficult-to-treat Infections

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

Eligibility Criteria:
Inclusion Criteria:~* Patients with difficult-to-treat bacterial infections~Exclusion Criteria:~* None

- Gender: ALL
- Minimum Age: 1 Month
- Maximum Age: 91 Years
- Healthy Volunteers: f

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