Figure 5. Study picture.
Schematic description of the study design. GPRS, General Packet Radio Service. Icon credit: Pixabay (https://pixabay.com/). User license available at https://creativecommons.org/licenses/by/4.0/
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.