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ihlr-21701	doi.org	https://doi.org/10.2147/oaem.s82133
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ihlr-21701	doi.org	https://doi.org/10.1136/bmj.322.7291.895
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ihlr-21701	doi.org	https://doi.org/10.1016/j.japh.2016.11.007
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ihlr-21701	doi.org	https://doi.org/10.1136/bmj.f174
ihlr-21701	doi.org	https://doi.org/10.1300/j069v25n03_11
ihlr-21701	doi.org	https://doi.org/10.7326/m15-2771
ihlr-21701	doi.org	https://doi.org/10.7326/0003-4819-158-1-201301010-00003
ihlr-21701	doi.org	https://doi.org/10.1186/1471-2458-14-297
ihlr-21701	doi.org	https://doi.org/10.1007/s11524-006-9120-z
ihlr-21701	doi.org	https://doi.org/10.1016/j.drugalcdep.2015.10.013
ihlr-21701	doi.org	https://doi.org/10.1111/jlme.12035
ihlr-21701	doi.org	https://doi.org/10.1016/s0955-3959(01)00080-9
ihlr-21701	doi.org	https://doi.org/10.2105/ajph.2015.302638
ihlr-21701	doi.org	https://doi.org/10.1215/03616878-17-3-463
ihlr-21701	doi.org	https://doi.org/10.1377/hlthaff.2010.0135
ihlr-21701	doi.org	https://doi.org/10.1016/j.jamda.2009.12.091
ihlr-21701	doi.org	https://doi.org/10.5694/mja15.01181
ihlr-21701	doi.org	https://doi.org/10.1056/nejmra011080
ihlr-21701	doi.org	https://doi.org/10.1016/j.drugalcdep.2014.10.001
ihlr-21701	doi.org	https://doi.org/10.1056/nejmsa1514387
ihlr-21701	doi.org	https://doi.org/10.1016/j.drugalcdep.2015.12.025
ihlr-21701	doi.org	https://doi.org/10.1016/j.drugalcdep.2016.04.002