From: Association between ischemic heart disease and colorectal neoplasm: a systematic review and meta-analysis
Study
Selection
Comparability
Exposure or outcome
Total
Neugut et al. (1998)
☆☆☆☆
☆☆
☆
7
Chan et al. (2006)
Chan et al. (2007)
☆☆☆
6
Yang et al. (2010)
8