1. The American Board of Thoracic Surgery: Update
John H. Calhoon, MD, Richard J. Shemin, MD, Mark S. Allen, MD, William A. Baumgartner, MD 
The Annals of Thoracic Surgery 
Volume 95, Issue 5, Pages (May 2013)
DOI: /j.athoracsur
Copyright © 2013 The Society of Thoracic Surgeons and the American Association for Thoracic Surgery Terms and Conditions

2. Fig 1
Pass results of the written and oral examinations for the last several years.
The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur )
Copyright © 2013 The Society of Thoracic Surgeons and the American Association for Thoracic Surgery Terms and Conditions