You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "What is the best known brand name of the material other than dacron often used to replace the aneurysmal portion of the aorta in OAS?" whose answer is Teflon.
Each document should contain about 30 words, and these documents should contain useful information.

Query: top brands for aortic aneurysm surgery replacement materials
Useful Output:

Doc 1: Abdominal aortic aneurysm (AAA) repair is a major component of vascular service provision. The prevalence of AAA in men 65 years of age
Doc 2:  replace the artery. The hospital stay after this major surgery can  material to seal off the aneurysm. The main aortic graft has
Doc 3: Major players in the abdominal aortic aneurysm (AAA) repair devices market are Cardiatis S.A, Cardinal Health Inc., Cook Medical Inc.,
Doc 4: Lombard Medical, Endologix LLC, Latecba SA, Nectero Medical, Cardiatis, SA, Hangzhou Endonom Medtech Co., Ltd. whose key Abdominal Aortic
Doc 5: In OAR, a prosthetic [Polyester or Poly Tetra Fluoro Ethylene (PTFE)] surgical graft is used to replace the affected aortic segment. Depending