Please assess the completion status of the following clinical trial:

Trial Title: Comparative Study of Pathophysiological Mechanisms and Bronchial Response in Occupational Asthma to Wheat Flour and Quaternary Ammonium Compounds During Standardized Bronchial Provocation Tests

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: OTHER
- Time Perspective: None
- Masking: TRIPLE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~For patients with occupational asthma to wheat flour:~* Clinical history,~* A positive skin test to wheat flour and / or specific IgE to wheat flour~For patients with occupational asthma to quaternary ammonium compounds:~-Clinical history,~For two types of asthma:~* Patients must have a worsening of bronchial hyperreactivity during work compared to a rest period assessed by a metacholine challenge~* FEV before challenge (nonspecific and specific) must be\> 70%.~Exclusion Criteria:~Asthmas:~* no occupational asthma:~* secondary to clinically relevant sensitization to an allergen domestic~* aggravated at work.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 50 Years
- Healthy Volunteers: f

Study Arms:
- Placebo (Type: PLACEBO_COMPARATOR): None
- flour allergen extract or quaternary ammonium compound (Type: ACTIVE_COMPARATOR): None

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