Table 2.
Search strategy for Ovid Medline
| Number of papers | Search strategy | No. |
|---|---|---|
| 9409 | mammogra* {No Related Terms} | #1 |
| 14941 | optic* {No Related Terms} | #2 |
| 13365 | infra* {No Related Terms} | #3 |
| 28285 | 2 or 3 | #4 |
| 22 | 1 and 4 | #5 |
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