BLOOMINGTON, Ind.--(BUSINESS WIRE)--A non-randomized, controlled study, led by Roy K. Greenberg, M.D., generated positive results on the Cook Zenith Abdominal Aortic Aneurysm (AAA) Endovascular Graft for endovascular aortic repair (EVAR), Cook Medical reported today. The trial results indicated that the EVAR procedure, using the Cook Zenith, is a safe and effective alternative to open surgical repair for the treatment of AAAs. The results were presented June 6 at the 62nd annual meeting of the Society for Vascular Surgery in San Diego, California and will be published in the July issue of the Journal of Vascular Surgery.