TY  - RPRT
TI  - Combined valve procedures.
AU  - S J Phillips
AU  - R H Zeff
AU  - C Kontahworn
PY  - 1977
DO  - 10.1016/s0003-4975(10)63464-9
UR  - https://pubmed.ncbi.nlm.nih.gov/304339/
ID  - 304339
ER  -