TY  - RPRT
TI  - Valvular heart disease.
AU  - B A Carabello
AU  - F A Crawford
PY  - 1997
DO  - 10.1056/nejm199707033370107
UR  - https://pubmed.ncbi.nlm.nih.gov/9203430/
ID  - 9203430
ER  -