TY  - RPRT
TI  - Percutaneous balloon valve dilatation.
AU  - S J Middleton
PY  - 1989
DO  - 10.1136/bmj.298.6682.1251-a
UR  - https://pubmed.ncbi.nlm.nih.gov/2502239/
ID  - 2502239
ER  -