Resolution: standard / high
Figure 1.
Flow diagram of study selection process.
Zechmeister et al. BMC Public Health 2008 8:20 doi:10.1186/1471-2458-8-20
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Resolution: standard / high Figure 1.
Flow diagram of study selection process.
Zechmeister et al. BMC Public Health 2008 8:20 doi:10.1186/1471-2458-8-20 |