TY  - RPRT
TI  - Shameem Ahmed.
AU  - A Costello
AU  - K Azad
PY  - 1999
DO  - 10.1136/bmj.319.7221.1373
UR  - https://pubmed.ncbi.nlm.nih.gov/10567162/
ID  - 10567162
ER  -