1. Pocket-Sized Heimlich Valve (Pneumostat) After Bullae Resection: A 5-Year Review 
Mohd Ramzisham Abdul Rahman, MS, Ooi Su Min Joanna, Mmed, Abdullah Mohd Fikri, FRCS, Syed Mohd Adeeb, MS, Dimon Mohd Zamrin, MS 
The Annals of Thoracic Surgery 
Volume 88, Issue 3, Pages (September 2009)
DOI: /j.athoracsur
Copyright © 2009 The Society of Thoracic Surgeons Terms and Conditions

2. Fig 1
Pneumostat pocket-sized Heimlich valve (Atrium Medical Corp, Hudson, NH).
The Annals of Thoracic Surgery  , DOI: ( /j.athoracsur )
Copyright © 2009 The Society of Thoracic Surgeons Terms and Conditions