TY  - RPRT
TI  - Some pitfalls in electrocardiography.
AU  - D LITTMANN
AU  - E F BLAND
PY  - 1953
DO  - 10.1016/s0025-7125(16)34953-7
UR  - https://pubmed.ncbi.nlm.nih.gov/13086023/
ID  - 13086023
ER  -