TY - GEN AU - Kopans,D B TI - NBSS: opportunity to compromise the process SN - 0820-3946 PY - 1997///0911 KW - Breast Neoplasms KW - diagnostic imaging KW - Canada KW - Female KW - Humans KW - Mammography KW - Random Allocation KW - Research Design KW - United States N1 - Publication Type: Letter; Comment ER -