ERBB2 and breast cancer: To add to the evidence on low-dose aspirin, other NSAIDs including regular dose aspirin (defined as 325 mg), and the risk of HR and HER2-defined breast cancer subtypes, we looked to our long-term prospective cohort of California public school professionals who were asked in 2005–2006 about current use of pain-relieving medications, including low-dose aspirin, regular-dose aspirin, ibuprofen, and other NSAIDs.