TY  - RPRT
TI  - P-wave changes in chronic obstructive pulmonary disease.
AU  - J B Calatayud
AU  - J M Abad
AU  - N B Khoi
AU  - W W Stanbro
AU  - H M Silver
PY  - 1970
DO  - 10.1016/0002-8703(70)90248-6
UR  - https://pubmed.ncbi.nlm.nih.gov/4244706/
ID  - 4244706
ER  -