1. Biopsy first: Lessons learned from Cancer and Leukemia Group B (CALGB) 140503 
Leslie J. Kohman, MD, Lin Gu, MS, Nasser Altorki, MD, Ernest Scalzetti, MD, Linda J. Veit, MPH, Jason M. Wallen, MD, Xiaofei Wang, PhD 
The Journal of Thoracic and Cardiovascular Surgery 
Volume 153, Issue 6, Pages (June 2017)
DOI: /j.jtcvs
Copyright © 2017 The American Association for Thoracic Surgery Terms and Conditions

2. Figure 1 Rate of randomization over time.
The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /j.jtcvs )
Copyright © 2017 The American Association for Thoracic Surgery Terms and Conditions

3. Diagnoses in suspected cT1A NSCLC.
The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /j.jtcvs )
Copyright © 2017 The American Association for Thoracic Surgery Terms and Conditions