TY  - RPRT
TI  - A simple modified technique for recording sinus node electrogram.
AU  - D L Zhang
AU  - S L Chen
PY  - 1988
DO  - 10.1002/ccd.1810150115
UR  - https://pubmed.ncbi.nlm.nih.gov/3409316/
ID  - 3409316
ER  -