1. Totally thoracoscopic closure of ventricular septal defect without a robotically assisted surgical system: A summary of 119 cases 
Zeng-Shan Ma, MD, Chang-Yong Yang, MD, Ming-Feng Dong, MD, Shu-Ming Wu, MD, Le-Xin Wang, MD, PhD 
The Journal of Thoracic and Cardiovascular Surgery 
Volume 147, Issue 3, Pages (March 2014)
DOI: /j.jtcvs
Copyright © 2014 The American Association for Thoracic Surgery Terms and Conditions

2. Figure 1 Location of the 3 ports on the right chest wall.
The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /j.jtcvs )
Copyright © 2014 The American Association for Thoracic Surgery Terms and Conditions

3. Figure 2 Function of the 3 ports.
The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /j.jtcvs )
Copyright © 2014 The American Association for Thoracic Surgery Terms and Conditions

4. Figure 3 Closure of a ventricular septal defect (VSD).
The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /j.jtcvs )
Copyright © 2014 The American Association for Thoracic Surgery Terms and Conditions