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.
Abbreviations: PROSPERO = International Prospective Register of Systematic Reviews; ICTRP = International Clinical Trials Registry Platform; OSF = Open Science Framework.
