Please assess the completion status of the following clinical trial:

Trial Title: Prevention Relapse of Graves' Disease by Intrathyroid Injection of Dexamethasone

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

Eligibility Criteria:
Inclusion Criteria:~* Newly diagnosed of Graves' Disease~Exclusion Criteria:~* Pregnancy~* Allergy to ATD, Alanine aminotransferase (ALT) or asparate aminotransferase (AST) above 2 times of upper normal range~* Non-compliance because of psychiatric or other serious diseases, or unwillingness to participate in the study.

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

Study Arms:
- MMI+IID group (Type: EXPERIMENTAL): MMI,methimazole；IID,intrathyroid injection of dexamethasone
- MMI Group (Type: ACTIVE_COMPARATOR): MMI,methimazole

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