TY  - RPRT
TI  - Analysis of sinus cycle variation: a new method for evaluation of suspected sinus node dysfunction.
AU  - B L Bergfeldt
AU  - K O Edhag
AU  - G Solders
AU  - H O Vallin
PY  - 1987
DO  - 10.1016/0002-8703(87)90498-4
UR  - https://pubmed.ncbi.nlm.nih.gov/3604889/
ID  - 3604889
ER  -