[ballistocardiogram in Acute Rheumatic Fever].

@article{Markiewicz1965ballistocardiogramIA,
  title={[ballistocardiogram in Acute Rheumatic Fever].},
  author={Michael Anne Markiewicz},
  journal={Polski tygodnik lekarski},
  year={1965},
  volume={20},
  pages={48-50}
}