Please assess the completion status of the following clinical trial:

Trial Title: Seroma Reduction After Mastectomy

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: TRIPLE
- Phase: PHASE4
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* Older than 18 years~* Female sex~* Indication for mastectomy or modified radical mastectomy~Exclusion Criteria:~* Patients undergoing breast conserving therapy~* Patients undergoing direct breast reconstruction~* Unable to comprehend implications and extent of study and sign for informed consent

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

Study Arms:
- conventional wound closure (Type: ACTIVE_COMPARATOR): The skin flaps will not undergo further treatment in this group.
- flap fixation with vicryl sutures (Type: EXPERIMENTAL): The skin flaps will be sutured on to the pectoral muscle after having performed the mastectomy.
- Artiss tissue glue (Type: EXPERIMENTAL): ARTISS tissue glue will be applied to the skin flaps after mastectomy

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