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.
Viscosity-dependent effect of FCT on the safety and efficacy of swallow (oral and pharyngeal residue). Left: all groups of patients; right: older, Parkinson’s and stroke patients merged vs. patients with head and neck cancer. The therapeutic range has been marked with a green rectangle.
