TY  - RPRT
TI  - [Heart valve replacement with 3 different adjustable disk valves].
AU  - G Fraedrich
AU  - P Walter
AU  - G Görlach
AU  - M Gottwik
PY  - 1982
UR  - https://pubmed.ncbi.nlm.nih.gov/7098837/
ID  - 7098837
ER  -