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| # | Query | Results |
|---|---|---|
| S11 | S3 AND S10 | 45 |
| S10 | (S4 or S5 or S6 or S7 or S8 or S9) | 3011 |
| S9 | Saphenous Vein* | 488 |
| S8 | (MH "Saphenous Vein") | 341 |
| S7 | (venous or vein* or saphenous) and (reflux or incomp* or insuff*) | 894 |
| S6 | (MH "Venous Insufficiency") | 385 |
| S5 | varicose vein* or varices or varicosis | 842 |
| S4 | (MH "Varicose Veins+") | 1464 |
| S3 | S1 or S2 | 3770 |
| S2 | radiofrequency ablation or RFA or radiofrequency obliteration | 907 |
| S1 | (MH "Catheter Ablation") | 3527 |
