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Search strategy used in Medline (via PubMed)
| No. | Search items |
|---|---|
| 1 | irritable bowel syndrome* |
| 2 | irritable bowel syndrome [mesh] |
| 3 | 1 OR 2 |
| 4 | probiotics* |
| 5 | probiotics [mesh] |
| 6 | 4 OR 5 |
| 7 | randomized controlled trial [pt] |
| 8 | controlled clinical trial [pt] |
| 9 | randomized controlled trials as topic [mesh] |
| 10 | animals [mesh] NOT humans [mesh] |
| 11 | 7 OR 8 OR 9 NOT 10 |
| 12 | 3 AND 6 AND 11 |
