Please assess the completion status of the following clinical trial:

Trial Title: Efficacy and Safety Study of Fentanyl Transdermal Patch for Treatment of Chronic Pain

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: PHASE4
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* spine related and extremity pain lasting for 3 months or longer~* pain with Numeric Rating Scale (NRS) at 4 or higher in the past 72 hours~* good overall health condition based on the medical history and clinical laboratory tests~* participants using appropriate contraception in case of childbearing potential during the study period.~Exclusion Criteria:~* history of hypersensitive reaction to narcotic analgesics~* history of narcotic abuse~* serious psychotic disorder~* unable to use transdermal analgesics due to a dermatological condition~* history of CO2 retention (e.g., chronic obstructive pulmonary disease)~* surgery in the area with pain within 7 days prior to initiation of the clinical study.

- Gender: ALL
- Minimum Age: 19 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Fentanyl-TTS (Type: EXPERIMENTAL): Study drug administered in a form of one patch, either 21.0 cm2 or 10.5 cm2.

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