Please assess the completion status of the following clinical trial:

Trial Title: Medication-overuse Headache (MOH): Withdrawal or Use of Preventative Medications Directly?

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

Eligibility Criteria:
Inclusion Criteria:~* fulfill 8.2.7 probably medication-overuse headache according to the International Classification of Headache Disorders, 2th Edition (2004)~Exclusion Criteria:~* No benefit of all available preventative medications~* no benefit of abrupt withdrawal lasting more than 3 weeks of acute medication that has been overused~* cluster headache~* chronic paroxysmal hemicrania~* hemicrania continua, pregnancy~* use of pain killers for other reasons than headache~* other reasons for chronic daily headache than medication-overuse

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 70 Years
- Healthy Volunteers: f

Study Arms:
- Prophylaxis from the start (Type: ACTIVE_COMPARATOR): Use of preventive drugs from the start without abrupt withdrawal
- Abrupt withdrawal (Type: OTHER): Device: Abrupt withdrawal. Standard out-patients detoxication program including telephone call after 2 weeks and rescue medicine up to 2 days/week
- Controls (Type: OTHER): Active control: No instruction for abrupt withdrawal or prophylactic treatment. The controls finished the study period after 5 months observation, and were then offered the optimal type of treatment

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