TY  - RPRT
TI  - [Assessment of sinus node function using electrophysiological methods].
AU  - I Tsenov
AU  - G Urumov
AU  - Iu Belov
PY  - 1981
UR  - https://pubmed.ncbi.nlm.nih.gov/7303643/
ID  - 7303643
ER  -