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Figure 1.
Flow diagram of studies.
Zhang and Rothenbacher BMC Public Health 2008 8:117 doi:10.1186/1471-2458-8-117
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Resolution: standard / high Figure 1.
Flow diagram of studies.
Zhang and Rothenbacher BMC Public Health 2008 8:117 doi:10.1186/1471-2458-8-117 |