Please assess the completion status of the following clinical trial:

Trial Title: The Frequency of Eosinophilic Esophagitis in Patients With Heartburn That is Refractory to Proton Pump Inhibitors

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

Eligibility Criteria:
Inclusion Criteria:Male and female patients ages 18 years and older who are referred to the Division of Gastroenterology at the Dallas VA Medical Center for the evaluation of heartburn that is refractory to PPI therapy~Exclusion Criteria:~1. Patients unwilling or unable to provide informed consent.~2. Allergy to lansoprazole.~3. Patients taking warfarin.~4. Coagulopathy that precludes safe biopsy of the esophagus.~5. Comorbidity that precludes safe participation in the study.~6. Pregnancy.

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

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