TY  - RPRT
TI  - BSE: stocktaking 1993.
AU  - J G Collee
PY  - 1993
DO  - 10.1016/0140-6736(93)91546-x
UR  - https://pubmed.ncbi.nlm.nih.gov/8103881/
ID  - 8103881
ER  -