Additional File 1.

This file is an excel file that contains three work sheets. The first sheet has the quality coding of studies used in the meta-analysis, the second sheet has the Grade rating of the evidence and the third sheet has the CHERG rules for defining the effectiveness values.

Format: XLSX Size: 115KB Download file

Lee et al. BMC Public Health 2011 11(Suppl 3):S12   doi:10.1186/1471-2458-11-S3-S12