Additional file 1.
Table S1 - Included studies' characteristics and areas of contribution to framework testing and refinement (by date order). This file contains a table of all the studies that contributed to our synthesis. The studies are listed in date order and in addition information is provided on; population studied; article type; aim of article; research method; and how each article contributed to theory testing.
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Wong et al. BMC Public Health 2011 11:222 doi:10.1186/1471-2458-11-222