| Study | Reason for exclusion |
|---|---|
| Babovic 2015 | This was not a randomised controlled trial; quote: "They were divided into two groups". Dr Babovic was contacted by email, and provided additional detail about the study methodology. |
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.