Please assess the completion status of the following clinical trial:

Trial Title: Effectiveness of Stiffening Wire in Colonoscopy With Pre-Owned Colonoscopes

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: DIAGNOSTIC
- Time Perspective: None
- Masking: SINGLE
- Phase: None
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* Adults 18 years and older having screening or diagnostic colonoscopy~Exclusion Criteria:~* Previous hysterectomy~* Previous radical prostatectomy~* Clinical presentation or imaging study suggesting presence of lesion that could obstruct passage of colonoscope

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

Study Arms:
- Stiffening wire only if difficulty (Type: EXPERIMENTAL): Colonoscopy is performed with the unassisted colonoscope. The stiffening wire is introduced only if there is difficulty advancing the colonoscope and only after the tip has passed the splenic flexure. Difficulty is defined as failure to advance the tip of the scope after 5 minutes of trying.
- Stiffening wire #1 transverse colon (Type: EXPERIMENTAL): Colonoscopy is started with the unassisted colonoscope. Stiffening wire #1 is introduced on entry of the tip of the colonoscope into the transverse colon.
- Stiffening wire #2 transverse colon (Type: EXPERIMENTAL): Colonoscopy is started with the unassisted colonoscope. Stiffening wire #2 is introduced on entry of the tip of the colonoscope into the transverse colon.

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