@misc{indiciae2a2a85857bc9, title = {Electrocardiographic changes in spontaneous left pneumothorax.}, author = {N Keller and M Szaff and R Sykulski}, year = {1987}, doi = {10.1111/j.0954-6820.1987.tb01287.x}, url = {https://pubmed.ncbi.nlm.nih.gov/3604760/}, note = {Source identifier: 3604760} }