Comment on

• Long-term follow-up of patients receiving lung-volume-reduction surgery versus medical therapy for severe emphysema by the National Emphysema Treatment Trial Research Group.

  Naunheim KS, Wood DE, Mohsenifar Z, Sternberg AL, Criner GJ, DeCamp MM, Deschamps CC, Martinez FJ, Sciurba FC, Tonascia J, Fishman AP; National Emphysema Treatment Trial Research Group. Naunheim KS, et al. Ann Thorac Surg. 2006 Aug;82(2):431-43. doi: 10.1016/j.athoracsur.2006.05.069. Ann Thorac Surg. 2006. PMID: 16888872 Clinical Trial.