TY  - RPRT
TI  - ELECTROCARDIOGRAPHIC CHANGES IN PREGNANCY.
AU  - N K WENGER
AU  - J W HURST
AU  - V N STROZIER
PY  - 1964
DO  - 10.1016/0002-9149(64)90426-6
UR  - https://pubmed.ncbi.nlm.nih.gov/14175532/
ID  - 14175532
ER  -