Please assess the completion status of the following clinical trial:

Trial Title: A Study to Determine the Effect of Nitroglycerin Ointment 0.4% (Cellegesic) on the Pain Associated With Chronic Anal Fissures

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: PHASE3
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Consenting patients of either sex.~* Between 18 and 75 years of age.~* With a single, chronic, posterior midline anal fissure.~* Defined as having anal pain for the 6 weeks prior to Screening.~Exclusion Criteria:~* More than one anal fissure.~* A fistula-in-ano or anal abscess.~* Inflammatory bowel disease.~* Fibrotic anal stenosis.~* Anal fissure secondary to an underlying condition.~* Any anal surgery.~* Concomitant medication that may interfere with study evaluation.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 75 Years
- Healthy Volunteers: f

Study Arms:
- Cellegesic (nitroglycerin 0.4%) (Type: EXPERIMENTAL): Participants applied Cellegesic 375 mg ointment containing approximately 1.5 mg of nitroglycerin anally twice daily for 21 days. In addition, participants took acetaminophen 650 mg orally twice daily for 21 days.
- Placebo 375 mg (Type: PLACEBO_COMPARATOR): Participants applied placebo 375 mg ointment anally twice daily for 21 days. In addition, participants took acetaminophen 650 mg orally twice daily for 21 days.

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