Table 1. General characteristics of the subjects.
a)Among the 93 patients who underwent tracheostomy, 90 patients received mechanical ventilation.
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.