Comment on

• Endobronchial Valves for Emphysema without Interlobar Collateral Ventilation.

  Klooster K, ten Hacken NH, Hartman JE, Kerstjens HA, van Rikxoort EM, Slebos DJ. Klooster K, et al. N Engl J Med. 2015 Dec 10;373(24):2325-35. doi: 10.1056/NEJMoa1507807. N Engl J Med. 2015. PMID: 26650153 Clinical Trial.
• Endobronchial Valves for Emphysema.

  Bailey A, Jaggar S. Bailey A, et al. N Engl J Med. 2016 Apr 7;374(14):1389-90. doi: 10.1056/NEJMc1600644. N Engl J Med. 2016. PMID: 27050223 No abstract available.