@misc{indiciae04c56cb45b09, title = {Electrocardiographic changes in concussion.}, author = {B R Greenspahn and B Barzilai and P Denes}, year = {1978}, doi = {10.1378/chest.74.4.468}, url = {https://pubmed.ncbi.nlm.nih.gov/699666/}, note = {Source identifier: 699666} }