1. 2-V or not 2-V: That is the question…plus some musings on thinking out of the box 
Ralph E. Delius, MD 
The Journal of Thoracic and Cardiovascular Surgery 
Volume 154, Issue 2, Pages (August 2017)
DOI: /j.jtcvs
Copyright © 2017 The American Association for Thoracic Surgery Terms and Conditions

2. Ralph E. Delius, MD
The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /j.jtcvs )
Copyright © 2017 The American Association for Thoracic Surgery Terms and Conditions