Please assess the completion status of the following clinical trial:

Trial Title: Graft Patency Analysis of the Right Coronary Artery System

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

Eligibility Criteria:
Inclusion Criteria:~* Angiographic evidence of severe coronary stenosis on the right coronary territory~* Elective surgery~* Isolated off pump CABG~* Age \< 75 years and life expectancy \> 5 years~* Preoperative RGEA diameter \> 1.5mm~* Normal left ventricular function~Exclusion Criteria:~* History of upper abdomen surgery~* History of upper GI bleeding~* Active gastric or duodenal ulcer~* Body mass index \> 35kg/m2~* Redo surgery~* Presence of varicose vein~* Contraindication for CABG such as malignancy or liver cirrhosis~* Other configuration than RGEA to RCA territory or SVG to RCA territory

- Gender: ALL
- Minimum Age: 20 Years
- Maximum Age: 75 Years
- Healthy Volunteers: f

Study Arms:
- RGEA group (Type: None): A right gastroepiploic artery in situ grafting in the right coronary artery system during OPCAB
- SVG group (Type: None): A saphenous vein grafting in the right coronary artery system during OPCAB

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