TY  - RPRT
TI  - Three-level block in concealed bigeminy.
AU  - S Kinoshita
PY  - 1983
DO  - 10.1016/s0022-0736(83)80026-0
UR  - https://pubmed.ncbi.nlm.nih.gov/6189932/
ID  - 6189932
ER  -