Long-term survival after thoracoscopic lung volume reduction: a multiinstitutional review Keith S Naunheim, MD, Larry R Kaiser, MD, Joseph E Bavaria, MD, Stephen R Hazelrigg, MD, Mitchell J Magee, MD, Rodney J Landreneau, MD, Robert J Keenan, MD, Joan F Osterloh, BSN, Theresa M Boley, Cesar A Keller, MD The Annals of Thoracic Surgery Volume 68, Issue 6, Pages 2026-2031 (December 1999) DOI: 10.1016/S0003-4975(99)01153-4
Fig 1 Actuarial survival curves after unilateral thoracoscopic lung volume reduction (UTLVR) and bilateral thoracoscopic lung volume reduction. Error bars represent one standard error. The Annals of Thoracic Surgery 1999 68, 2026-2031DOI: (10.1016/S0003-4975(99)01153-4)