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Complications by year of diagnosis and local therapy (unadjusted). Unadjusted time trends in risk of any complication by type of local therapy. Data for lumpectomy plus brachytherapy in 2000 and 2001 are not shown for the MarketScan cohort because of small numbers (n = 5). SEER = Surveillance, Epidemiology, and End Results; WBI = whole breast irradiation.
