TY  - RPRT
TI  - Aortic valve sparing operations: an update.
AU  - T E David
AU  - S Armstrong
AU  - J Ivanov
AU  - G D Webb
PY  - 1999
DO  - 10.1016/s0003-4975(99)00420-8
UR  - https://pubmed.ncbi.nlm.nih.gov/10391321/
ID  - 10391321
ER  -