TY  - RPRT
TI  - Simple noninvasive test for evaluating defects in pulmonary perfusion.
AU  - M K Ali
AU  - R L Burdett
AU  - C C Shullenberger
PY  - 1975
UR  - https://pubmed.ncbi.nlm.nih.gov/1114461/
ID  - 1114461
ER  -