| Study | Reason for exclusion |
|---|---|
| Ferrante 2014 | Abstract publication All patients received azathioprine Study compared systematic azathioprine therapy to endoscopically driven azathioprine therapy |
| Mañosa 2013 | All patients received azathioprine Study compared combination of azathioprine and metronidazole to azathioprine |
| Nos 2000 | Not RCT after contacting author |
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