TY  - RPRT
TI  - First degree heart block after DC countershock.
AU  - P O Wester
AU  - C Helmers
DO  - 10.1111/j.0954-6820.1973.tb10544.x
UR  - https://pubmed.ncbi.nlm.nih.gov/4705091/
ID  - 4705091
ER  -