TY  - RPRT
TI  - Classification of the electrocardiogram for population studies: Minnesota Code.
AU  - H Blackburn
PY  - 1969
DO  - 10.1016/s0022-0736(69)80120-2
UR  - https://pubmed.ncbi.nlm.nih.gov/5367885/
ID  - 5367885
ER  -