Lin, C. ., Carneal, E. ., Lichtensztajn, D. ., Gomez, S. ., Clarke, C. ., Jensen, K. ., … Allison, K. . (2017). Regional Variability in Percentage of Breast Cancers Reported as Positive for HER2 in California: Implications of Patient Demographics on Laboratory Benchmarks. American Journal of Clinical Pathology, 148(3), 199-207. https://doi.org/10.1093/ajcp/aqx063 (Original work published 2017)