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.
Kaplan-Meier curves of patients censored at the time of death according to clinical phenotype. Survival according to the phenotypes with amyotrophic lateral sclerosis bulbar, onset having significantly different curves to flail arm and leg (p<0.003 and <0.004).
