TY  - RPRT
TI  - The coronary collateral circulation.
AU  - R H Helfant
AU  - R Gorlin
PY  - 1972
DO  - 10.7326/0003-4819-77-6-995
UR  - https://pubmed.ncbi.nlm.nih.gov/4644174/
ID  - 4644174
ER  -