TY  - RPRT
TI  - Mitral valve replacement with a turtleneck-disc prosthesis.
AU  - S S Oparah
AU  - J F Keefe
AU  - T J Ryan
AU  - R L Berger
PY  - 1975
UR  - https://pubmed.ncbi.nlm.nih.gov/1117745/
ID  - 1117745
ER  -