TY  - RPRT
TI  - Percutaneous balloon mitral valvotomy: single versus double balloon techniques.
AU  - S Shrivastava
PY  - 1990
DO  - 10.1016/0002-9149(90)91021-w
UR  - https://pubmed.ncbi.nlm.nih.gov/2327350/
ID  - 2327350
ER  -