1. The impact of frailty on outcomes after cardiac surgery: A systematic review 
Aresh Sepehri, BSc, Thomas Beggs, Ansar Hassan, MD, PhD, FRCSC, Claudio Rigatto, MD, MSc, FRCPC, Christine Shaw-Daigle, BA, MLS, AHIP, Navdeep Tangri, MD, PhD, FRCPC, Rakesh C. Arora, MD, PhD, FRCSC, FACS 
The Journal of Thoracic and Cardiovascular Surgery 
Volume 148, Issue 6, Pages (December 2014)
DOI: /j.jtcvs
Copyright © 2014 The American Association for Thoracic Surgery Terms and Conditions

2. Figure 1 Flow diagram of reviewed studies.
The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /j.jtcvs )
Copyright © 2014 The American Association for Thoracic Surgery Terms and Conditions