Table I.

Sample Search Strategy in OVID MEDLINE

1. Hypertension/or hypertension.mp

2. (resistant adj hypertension).mp

3. (blood adj pressure).mp

4. or/1–3

5. (renal adj sympathetic adj denervation).mp

6. Sympathectomy/

7. Kidney/

8. 6 and 7

9. 5 or 8

10. 4 and 9

11. Limit 10 to English language