TY  - RPRT
TI  - A study in concealed reciprocal conduction.
AU  - P A Barrett
AU  - L Schamroth
PY  - 1980
DO  - 10.1378/chest.78.6.870
UR  - https://pubmed.ncbi.nlm.nih.gov/7449466/
ID  - 7449466
ER  -