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.
Survival from randomisation in a randomised controlled trial of non-invasive ventilation () compared with standard care () in patients with amyotrophic lateral sclerosis and (a) normal or only moderately impaired bulbar function and (b) severe bulbar impairment. NIV = non-invasive ventilation.
