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.
Color codes are as indicated in Figures 10 and 11. Detailed information regarding individual 3D models shown in the videos can be found in the ‘Table 2—source data 1' file.
