1. Hannan EL, Kilburn H, O'Donnell JF, et al. A longitudinal analysis of the relationship between in-hospital and the volume of abdominal aortic aneurysms performed in New York State. (Submitted for publication.)
2. After the confidential enquiry into perioperative deaths: aortic aneurysm surgery in the Northern Region;Guy;Br J Surg,1990
3. Abdominal aortic aneurysms. Is there an association between surgical volume, surgical experience, hospital type and operative mortality?;Amundsen;Acta Chir Scand,1990
4. Investigation of the relationship between volume and mortality for surgical procedures performed in New York State hospitals;Hannan;JAMA,1989