TY  - RPRT
TI  - Quality control programme in mammography: second level quality controls.
AU  - E Nassivera
AU  - L Nardin
PY  - 1997
DO  - 10.1259/bjr.70.834.9227255
UR  - https://pubmed.ncbi.nlm.nih.gov/9227255/
ID  - 9227255
ER  -