@misc{indiciae93fc9a0f19f8, title = {[Electrocardiographic changes in obstructive pulmonary emphysema].}, author = {K P Schüren and U Hüttemann}, year = {1972}, doi = {10.1055/s-0028-1107567}, url = {https://pubmed.ncbi.nlm.nih.gov/4560191/}, note = {Source identifier: 4560191} }