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Figure 1.
Sample selection of study participants by strata.
Malik et al. BMC Health Services Research 2010 10:201 doi:10.1186/1472-6963-10-201
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Resolution: standard / high Figure 1.
Sample selection of study participants by strata.
Malik et al. BMC Health Services Research 2010 10:201 doi:10.1186/1472-6963-10-201 |