| Study | Reason for exclusion |
|---|---|
| Fast 1994 | No placebo arm. Oral gentamicin vs. an oral IgG/IgA mixture. |
| Richter 1998 | Not a randomized or quasi‐randomised trial. This is an historical cohort study. |
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.