| Study | Reason for exclusion |
|---|---|
| Brisman 1976 | Confounded by use of hyperbaric oxygen on control arm |
| Cianfriglia 1980 | alternate allocation |
| Eagan 1979 | Eligible but data unavailable |
| EORTC 26741 | Eligible but data lost by data centre |
| EORTC 26742 | Eligible but data lost by data centre |
| Garrett 1978 | 'randomized' by date of birth |
| Hatlevoll 1985 | Eligible but data unavailable |
| Kristiansen 1981 | Eligible but data unavailable |
| Muller 1985 | 'randomized' by date of birth |
| Reagan 1976 | Eligible but data unavailable |
| Takakura 1986 | Eligible but unable to participate |
| Ushio 1981 | Several treatment groups operational at different times |
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.