title: NBSS: changes were made, suspicious changes were not.
authors.forename: C J
authors.initials: CJ
authors.lastname: Baines
mesh_terms: D000328:Adult; D001943:Breast Neoplasms / Q000000981:diagnostic imaging / Q000517:prevention & control*; D002170:Canada; D005260:Female; D006801:Humans; D008327:Mammography; D008403:Mass Screening; D008875:Middle Aged; D011897:Random Allocation; D012107:Research Design; D014481:United States