TY  - RPRT
TI  - Left heart catheterization by direct ventricular puncture.
AU  - T Semple
AU  - J B McGuinness
AU  - H Gardner
PY  - 1968
DO  - 10.1136/hrt.30.3.402
UR  - https://pubmed.ncbi.nlm.nih.gov/5651255/
ID  - 5651255
ER  -