TY  - RPRT
TI  - Lung function tests and a 'vertical' P wave axis in the electrocardiogram.
AU  - T T Chapman
PY  - 1974
DO  - 10.1136/thx.29.1.106
UR  - https://pubmed.ncbi.nlm.nih.gov/4825541/
ID  - 4825541
ER  -