TY  - RPRT
TI  - Fluctuating nodal rhythm.
AU  - I L VURAL
AU  - S R ELEK
PY  - 1961
DO  - 10.1378/chest.40.6.691
UR  - https://pubmed.ncbi.nlm.nih.gov/13926969/
ID  - 13926969
ER  -