TY  - RPRT
TI  - Electrophysiological testing of sinus node function.
AU  - A M Tonkin
AU  - W F Heddle
PY  - 1984
DO  - 10.1111/j.1540-8159.1984.tb05604.x
UR  - https://pubmed.ncbi.nlm.nih.gov/6205377/
ID  - 6205377
ER  -