Periodic breast cancer screening. The first two years of screening.
D000328:Adult; D001943:Breast Neoplasms / Q000175:diagnosis* / Q000453:epidemiology / Q000517:prevention & control; D005260:Female; D006801:Humans; D008207:Lymphatic Metastasis; D008327:Mammography; D008403:Mass Screening; D008875:Middle Aged