TY  - RPRT
TI  - Protection afforded by cycle helmets.
AU  - R Keatinge
AU  - R Parry
PY  - 1994
DO  - 10.1136/bmj.309.6966.1441a
UR  - https://pubmed.ncbi.nlm.nih.gov/7819872/
ID  - 7819872
ER  -