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Table 3 Example of search strategy for MEDLINE (OVID SP) up to week 2 of January 2013

From: Medical device procurement in low- and middle-income settings: protocol for a systematic review

No. Search strategy
1. device.mp. or exp “Equipment and Supplies”/
2. (device* or equipment* or suppl*).mp. [mp = title, abstract, original title, name of substance word, subject heading word, keyword heading word, protocol supplementary concept, rare disease supplementary concept, unique identifier]
3. exp Technology, Radiologic/ or exp Technology Assessment, Biomedical/ or exp Fiber Optic Technology/ or exp Educational Technology/ or exp Biomedical Technology/ or technology.mp. or exp “United States Office of Technology Assessment”/ or exp Technology/ or exp Food Technology/ or exp Technology, High-Cost/ or exp Technology Transfer/ or exp “National Center for Health Care Technology (U.S.)”/ or exp Wireless Technology/ or exp Technology, Dental/ or exp Green Chemistry Technology/ or exp Technology, Pharmaceutical/ or exp Remote Sensing Technology/
4. 1 or 2 or 3
5. (procure* or purchas* or acqui* or commission* or buy*or order*).mp. [mp = title, abstract, original title, name of substance word, subject heading word, keyword heading word, protocol supplementary concept, rare disease supplementary concept, unique identifier]
6. (countr* adj2 (income or poor or poverty or develop* or resource or low* or mid*)).mp. [mp = title, abstract, original title, name of substance word, subject heading word, keyword heading word, protocol supplementary concept, rare disease supplementary concept, unique identifier]
7. (third adj2 world).mp. [mp = title, abstract, original title, name of substance word, subject heading word, keyword heading word, protocol supplementary concept, rare disease supplementary concept, unique identifier]
8. (emerging adj2 (econom* or market*)).mp. [mp = title, abstract, original title, name of substance word, subject heading word, keyword heading word, protocol supplementary concept, rare disease supplementary concept, unique identifier]
9. developing country.mp. or exp Developing Countries/
10. 6 or 7 or 8 or 9
11. 4 and 5 and 10
  1. Conducted last: 28 January 2013, 15:10 (GMT). Number of records identified: 2,297.