TY  - GEN
AU  - Starr,A
TI  - Comparison of long term results after ball valve replacement
SN  - 0021-9509
PY  - 1976///0305
KW  - Aortic Valve
KW  - surgery
KW  - Follow-Up Studies
KW  - Heart Valve Prosthesis
KW  - adverse effects
KW  - Humans
KW  - Mitral Valve
KW  - Oregon
N1  - Publication Type: Comparative Study; Journal Article
ER  -