Additional file 1.

Supplemental material. Supplement 1: Annex 1. Check list for CP definition of European Pathway association. Supplement 2: Annex 2. Check list for included studies. Supplement 3: List of excluded studies. Supplement 4: Annex 3. Check list for risk of bias for each included papers. Supplement 5: Result of sensitivity analysis.

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Kul et al. BMC Cardiovascular Disorders 2012 12:81   doi:10.1186/1471-2261-12-81