32 An increasing trend in prevalence of adult obesity or overweight has been recorded across the study period. 33 , 34 We observed the increasing incidence of stage I tumors, similar to what has been reported previously. 18 This increase may be due to young women detecting tumors sooner than they would have in previous decades.
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Breast Cancer Incidence Among US Women Aged 20 to 49 Years by Race, Stage, and Hormone Receptor Status.
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