Fig 1. Lung functions according to the presence of prior pulmonary tuberculosis.
(A) In all study subjects; (B) In subjects with normal chest X-rays. FVC: forced vital capacity; FEV1: forced expiratory volume in 1 second.
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.