TY  - RPRT
TI  - [ELECTROCARDIOGRAPHIC CHANGES DURING SURGERY IN OLD AGE].
AU  - A ATANASOV
AU  - V MARINOV
AU  - D DIMOV
PY  - 1964
UR  - https://pubmed.ncbi.nlm.nih.gov/14149063/
ID  - 14149063
ER  -