TY  - RPRT
TI  - Comment on improved maneuver for left heart catheterization.
AU  - V Maranhao
PY  - 1972
DO  - 10.1016/0002-8703(72)90320-1
UR  - https://pubmed.ncbi.nlm.nih.gov/5080277/
ID  - 5080277
ER  -