TY  - RPRT
TI  - Percutaneous balloon valve dilatation.
AU  - M J Levine
AU  - R G McKay
PY  - 1989
DO  - 10.1136/bmj.298.6674.620
UR  - https://pubmed.ncbi.nlm.nih.gov/2496782/
ID  - 2496782
ER  -