[Study of the effects of Valsalva's maneuver on the electrocardiogram and its clinical significance in patients with chronic respiratory diseases].

@article{Omura1966StudyOT,
  title={[Study of the effects of Valsalva's maneuver on the electrocardiogram and its clinical significance in patients with chronic respiratory diseases].},
  author={Tomohiro Omura},
  journal={Japanese circulation journal},
  year={1966},
  volume={30 11},
  pages={1407-15}
}