Please assess the completion status of the following clinical trial:

Trial Title: Antibiotics in Free Flaps Reconstructions

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

Eligibility Criteria:
Inclusion Criteria:~* Any patient who required reconstructive surgery for oncological reasons within the oral cavity with microvascular free flaps.~Exclusion Criteria:~* Healthy humans.~* Patients receiving preoperative neoadjuvant or previous adjuvant radiation therapy in their medical history.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 90 Years
- Healthy Volunteers: f

Study Arms:
- control (Type: NO_INTERVENTION): no antibiotics
- experimental group (Type: ACTIVE_COMPARATOR): drug administration (antibiotic)

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