TY  - RPRT
TI  - Left ventricular outflow obstruction caused by mitral ring calcification.
AU  - K Iga
AU  - K Hori
PY  - 1990
DO  - 10.1016/s0002-8703(05)80045-6
UR  - https://pubmed.ncbi.nlm.nih.gov/2301238/
ID  - 2301238
ER  -