1. Aortic root surgery for young patients: The elephant in the room
John R. Doty, MD 
The Journal of Thoracic and Cardiovascular Surgery 
Volume 152, Issue 6, (December 2016)
DOI: /j.jtcvs
Copyright © 2016 The American Association for Thoracic Surgery Terms and Conditions

2. Aortic root of elephant, Hunterian Museum collection, Royal College of Surgeons, London.
The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /j.jtcvs )
Copyright © 2016 The American Association for Thoracic Surgery Terms and Conditions