Real-World Data Collection of the GORE® VIABAHN® VBX Balloon Expandable Endoprosthesis When Used in Covered Endovascular Reconstruction of the Aortic Bifurcation (CERAB) to Treat Aortoiliac Occlusive Disease

Inclusion Criteria: 1. Patient treated with covered endovascular reconstruction of the aortic bifurcation (CERAB) procedure for aortoiliac occlusive disease (AIOD). 2. Patient was implanted with the VBX Device in the aortic position during a CERAB procedure. 3. Patient was treated with the CERAB procedure a minimum of 1 year before enrollment date. 4. Age ≥18 years at the time of CERAB procedure. 5. Obtain patient informed consent or waiver according to local Institutional Review Board (IRB)/Ethics Committee (EC) - Exclusion Criteria: 1. Patient with prior stenting in the aortic or common iliac artery at the time of CERAB procedure. 2. Patient treated with concomitant chimney procedure at time of CERAB procedure (e.g., inferior mesenteric artery, renal artery). 3. Participation in another drug or device investigational study at the time of the CERAB procedure date that can confound the study endpoints. \-