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.
Illustration of the monitoring procedure. The first column depicts purpose of measuring; the second column classifies type of measurement; the third column describes type of actions included for measuring; and the fourth column depicts original data storage. All data are merged to the study database.
