1. Clinical impact of preoperative inspiratory muscle training: We need further studies! 
Marc Licker, MD, John Diaper, RA 
The Journal of Thoracic and Cardiovascular Surgery 
Volume 157, Issue 3, Pages e175-e176 (March 2019)
DOI: /j.jtcvs
Copyright © 2018 The American Association for Thoracic Surgery Terms and Conditions

2. The Journal of Thoracic and Cardiovascular Surgery  , e175-e176DOI: ( /j.jtcvs )
Copyright © 2018 The American Association for Thoracic Surgery Terms and Conditions