Fig. 4.
Changes of symptom severity score in the two groups. (A) Intensity score, (B) frequency score, and (C) aggravation score.
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.