Search strategy

Three electronic databases (MEDLINE, MEDLINE In-Process, EMBASE [OvidSP], and the Cochrane Library [Wiley]) were searched (search strategy) (ebox).

1. exp Scabies/

2. scabies.ab,ti.

3. 1 or 2

4. Randomized Controlled Trials as Topic/

5. randomized controlled trial/

6. Random Allocation/

7. Double-Blind Method/

8. Single Blind Method/

9. clinical trial/

10. clinical trial, phase I.pt.

11. clinical trial, phase II.pt.

12. clinical trial, phase III.pt.

13. clinical trial, phase IV.pt.

14. controlled clinical trial.pt.

15. randomized controlled trial.pt.

16. multicenter study.pt.

17. clinical trial.pt.

18. exp Clinical Trials as topic/

19. 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 or 17 or 18

20. (clinical adj trial$).tw.

21. ((singl$ or doubl$ or treb$ or tribl$) adj (blind$3 or mask$3)).tw.

22. Placebos/

23. placebo$.tw.

24. randomly allocated.tw.

25. (allocated adj2 random$).tw.

26. 20 or 21 or 22 or 23 or 24 or 25

27. 19 or 26

28. case report.tw.

29. letter/

30. historical article/

31. 28 or 29 or 30

32. 27 not 31

33. 3 and 32