| From PubMed, until March 2021 | ||
| Search equations | ||
| #1 | ((low back pain[MeSH Terms]) OR (back pain injuries[MeSH Terms])) AND (triage[MeSH Terms]) | 12 |
| #2 | ((low back pain[MeSH Terms]) AND (Diagnosis, Differential[MeSH Terms]) | 15 |
| #3 | ((((low back pain) AND (diagnosis)) AND (red flag*)) AND (primary health care)) AND (humans) | 20 |
| #4 | ((((low back pain) AND (diagnosis)) AND (red flag*)) AND (humans) | 60 |
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