TY  - RPRT
TI  - J. Garland.
AU  - H Clegg
AU  - J Lister
PY  - 1973
DO  - 10.1136/bmj.3.5876.412
UR  - https://pubmed.ncbi.nlm.nih.gov/4581083/
ID  - 4581083
ER  -