1. Symptoms versus testing: How should we follow-up achalasia after myotomy? 
Victor van Berkel, MD, PhD 
The Journal of Thoracic and Cardiovascular Surgery 
Volume 156, Issue 2, Pages (August 2018)
DOI: /j.jtcvs
Copyright © 2018 The American Association for Thoracic Surgery Terms and Conditions

2. Victor van Berkel, MD, PhD
The Journal of Thoracic and Cardiovascular Surgery  , DOI: ( /j.jtcvs )
Copyright © 2018 The American Association for Thoracic Surgery Terms and Conditions