Association of left subclavian artery coverage without revascularization and spinal cord ischemia in patients undergoing thoracic endovascular aortic repair: a Vascular Quality Initiative® analysis - Teixeira, P G; Woo, K; Beck, A W; Scali, S T; Weaver, F A; Society for Vascular Surgery, Vascular Quality Initiative (VQI)® (Vascular, 2017)