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Figure 1.
Family income index derived from the activities of the parents.
Torre et al. BMC Public Health 2006 6:22 doi:10.1186/1471-2458-6-22
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Resolution: standard / high Figure 1.
Family income index derived from the activities of the parents.
Torre et al. BMC Public Health 2006 6:22 doi:10.1186/1471-2458-6-22 |