Please assess the completion status of the following clinical trial:

Trial Title: Identification of Volatile Organic Compounds in Exhaled Air During Exacerbation of Chronic Obstructive Pulmonary Disease

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: CASE_CONTROL
- Primary Purpose: None
- Time Perspective: PROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria of COPD group:~* COPD stages 2 and 3 of GOLD score (30 ≤ forced expiratory volume at one second (FEV1) \< 80% of predicted value),~* exacerbation confirmed clinically (increased dyspnea, cough or expectorations \> 48 hours)~Inclusion Criteria of non COPD group:~* No smoker (\<100 cigarettes/year)~Exclusion Criteria of COPD group:~* Diagnosis of COPD not confirmed.~* Instable clinical status with respiratory failure and indication of mechanical ventilation.~* Bronchodilator treatment changed~* Antibiotic treatment started in the 10 last days before admission~Exclusion Criteria of non COPD group:~* Chronic inflammatory disease~* Any respiratory disease~* Oral corticosteroid treatment during the last month

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: t

Study Arms:
- COPD Patients (Type: None): Patients with COPD, within 48h after hospital admission for exacerbation.
- non-COPD patients (Type: None): Healthy person of the entourage of COPD patients.

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