TY - GEN AU - LANGENDORF,R AU - MEHLMAN,J S TI - Blocked (nonconducted) A-V nodal premature systoles imitating first and second degree A-V block SN - 0002-8703 PY - 2010///0318 KW - Atrioventricular Node KW - Humans KW - Systole N1 - Publication Type: Journal Article UR - https://doi.org/10.1016/0002-8703(47)90528-0 ER -