TY  - RPRT
TI  - Cardiac massage: how vigorous.
AU  - D B Longmore
AU  - M Rehahn
AU  - C R Dipple
PY  - 1977
DO  - 10.1016/s0140-6736(77)92870-7
UR  - https://pubmed.ncbi.nlm.nih.gov/69860/
ID  - 69860
ER  -