FIG 3.
Data processing in this study. (A) Data for model tuning and construction. (B) Data for external testing. (C) Data for the final model.
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.