Please assess the completion status of the following clinical trial:

Trial Title: Colon Investigation - Factors Determining Choice of Procedure

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

Eligibility Criteria:
Inclusion Criteria:~* Patients referred to colon investigation~* Patients must be 18 years or older~Exclusion Criteria:~* Patients not able to give a written consent

- 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).