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Methodological quality of included trials
| Authors | Randomisation | Allocation concealment | Random sequence generation | Blinding | Reporting of withdrawals | Jadad score |
|---|---|---|---|---|---|---|
| Harrison 2003 | Y | Y | Y | Y | Y | 5 |
| Dufour 2006 | Y | U | U | Y | Y | 3 |
| Sanyal 2010 | Y | U | U | Y | Y | 3 |
Y: yes; U: unclear.
