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Table 1 Electronic database search terms

From: Systematic review and meta-analysis of diagnostic accuracy of detection of any level of diabetic retinopathy using digital retinal imaging

1. Exp mass screening/
2. Exp vision tests/
3. Exp telemedicine/
4. Exp Photography/
5. Exp ophthalmoscopes/
6. Exp ophthalmoscopy/
7. (ophthalmoscop$ or fundoscop$ or funduscop$) . ti .
8. ((photo$ or imag$) adj3 fundus) . tw .
9. (Photography or retinopgraphy) . tw .
10. ((mydiatric or digital or retina$ or funduc or stereoscopic) adj3 camera) . tw .
11. ((mydiatric or digital or retina$ or fundus or stereoscopic) adj3 imag$) .tw .
12. Screen$ . tw .
13. ((eye$ or retina$ or ophthalm$) adj4 exam$).tw .
14. ((eye$ or vision or ophthalmic) adj4 test$) . tw.
15. ((eye$ or retina$ or ophthalm$) adj4 visit$) . tw .
16. Office visits/
17. (telemedicine$ or telemonitor$ or telescreen$) . tw .
18. 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 or 13 or 14 or 15 or 16
19. exp diabetes mellitus/
20. exp diabetes complications/
21. 19 or 20
22. exp diabetic retinopathy/
23. ((diabet$ or proliferative or non-proliferative) adj4 retinopath$).tw.
24. 21 or 22
25. 18 and 21 and 24