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jep12011-sup-0001-si.doc25K

Appendix S1 Search strings.

jep12011-sup-0002-si.doc48K

Appendix S2 Summary of studies.

jep12011-sup-0003-si.pdf105K

Appendix S3 Results of QUADAS quality evaluation.Columns represent QUADAS questions and rows represent individual studies.

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