TY  - RPRT
TI  - The total QRS duration.
AU  - H W BLACKBURN
AU  - E SIMONSON
PY  - 1957
DO  - 10.1016/0002-8703(57)90339-3
UR  - https://pubmed.ncbi.nlm.nih.gov/13410783/
ID  - 13410783
ER  -