Please assess the completion status of the following clinical trial:

Trial Title: Analysis of Aldehyde Biomarkers of Exposure and Host Response

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

Eligibility Criteria:
Inclusion Criteria:~* Smokers of at least 5 pack years;~* Stable smoking habit for 3 months;~* Willing to make a serious quit attempt;~* Able to use nicotine replacement therapy~Exclusion Criteria:~* Regular use of anti-inflammatory medication~* Inflammatory lung disease~* Unstable medical condition

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

Study Arms:
- Nicotine replacement therapy (NRT) (Type: EXPERIMENTAL): open label NRT self comparator design

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