Please assess the completion status of the following clinical trial:

Trial Title: A Study Using Botulinum Toxin Type A as Headache Prophylaxis for Migraine Patients With Frequent Headaches

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE3
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Frequent migraine (\>=15 headache days per month)~* \>=4 distinct headache episodes lasting \>=4 hours~* \>=50% of baseline headache days migraine/probable migraine days~Exclusion Criteria:~* Previous use of botulinum toxin of any serotype or immunization to any botulinum toxin serotype~* Any medical condition that puts the patient at increased risk with exposure to BOTOX~* Diagnosis of complicated migraine, chronic tension-type headache, hypnic headache, hemicrania continua, new daily persistent headache~* Use of prophylactic headache medication within 28 days prior to week -4~* Unremitting headache lasting continuously throughout the 4-week baseline period~* Known or suspected TMD~* Diagnosis of fibromyalgia~* Beck depression inventory score \>24 at week-4~* Psychiatric problems that may have interfered with study participation

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

Study Arms:
- botulinum toxin Type A (Type: EXPERIMENTAL): Two treatment sessions in the double-blind phase and three treatment sessions in the open-label extension phase. Total minimum dose is 155 U with 31 fixed-site, fixed dose injections across seven specific head/neck muscle areas with the total maximum dose of 195 U with 39 head/neck injections.
- Placebo (saline) (Type: PLACEBO_COMPARATOR): Two treatment sessions in the double-blind phase. Total minimum dose in 155 U with 31 fixed-site, fixed dose injections across seven specific head/neck muscle areas and the total maximum dose is 195 U with 39 head/neck injections.

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