26feec7e 7793 4094 899d C3b40a4f0eba 00
This text provides a list of relevant studies that have evaluated the risk of breast cancer associated with the use of combined oral contraceptives. The studies included in the list compare ever use versus never use of COCs, as well as current use versus never use. The text also includes some statistical information, including effect estimates such as odds ratios (OR), relative risks (RR), and hazard ratios (HR) for the association between COC use and breast cancer risk.*