TY  - RPRT
TI  - Left-to-right shunts. (Quantification, mathematical methods and their statistical comparison).
AU  - P P Ferretti
AU  - A Benini
AU  - A Borrini
AU  - G Ugolotti
DO  - 10.1007/bf02932181
UR  - https://pubmed.ncbi.nlm.nih.gov/397603/
ID  - 397603
ER  -