Search terms

1.transcutaneous adj electric adj nerve adj stimulation 2. transcutaneous‐electric‐nerve‐stimulation.de. 3. tns 4. electric‐stimulation.de. 5. electric adj stimulation adj therapy 6. percutaneous adj electric adj nerve adj stimulation 7. electric adj stimulation 8. electrostimulation 9. electroanalgesi$ 10. electrothera$ 11. electromagneti$ 12. electrotherapy#.w..de. 13. interferential 14. rebox 15. codetron 16. likon 17. 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16 18. cancer 19. cancer‐patients.de. 20. cancer adj pain 21. cancer‐pain.de. 22. neoplasm 23. neoplasms#.w..de. 24. tumour 25. carcinoma#.w..de. 26. carcinoma 27. oncolo$ 28. malignan$ 29. tumor 30. 18 or 19 or 20 or 21 or 22 or 23 or 24 or 25 or 26 or 27 or 28 or 29 31. pain 32. pain#.w..de. 33. pain adj measurement 34. pain‐measurement.de. 35. pain adj scale 36. 31 or 32 or 33 or 34 or 35 37. adult.de. or middle‐age or aged.w..de. or aged‐80‐and‐over 38. clinical adj trial 39. controlled adj clinical adj trial 40. evaluation 41. prospective 42. meta‐analysis 43. randomised adj controlled adj trial 44. validation 45. random adj allocation 46. experimental‐studies#.de. or clinical‐trials#.de. 47. clinical adj research 48. clinical‐research#.de. 49. 38 or 39 or 40 or 41 or 42 or 43 or 44 or 45 or 46 or 47 or 48 50. 17 and 30 and 36 51. 17 and 30 and 36 and 49 52. 51 and 37