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| Search Strategy | Databases Used | Number of Papers Identified |
| Probiotics AND Constipation AND Bifidobacterium | Pubmed | 50 |
| (Probiotics [Title/Abstract]). (Constipation [Title/Abstract]). ((Chronic constipation [Title/Abstract]); OR (Bifidobacterium [Title/Abstract]); AND ((Functional constipation [Title/Abstract]); OR (Chronic constipation [Title/Abstract]). | Pubmed Central | 568 |
| "Probiotics [tw]" AND "Constipation [tiab]" AND "Bifidobacterium[all]" | Medline | 1 |
