Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Comparisons of pulmonary function tests stratified by surgical extent. Values are presented as mean±standard deviation. (A) Preoperative and postoperative FEV1 (%) stratified by surgical extent. (B) Reduction of FEV1 after surgery. FEV1, forced expiratory volume in 1 second.
