Editorial: Changing of the guard.

@article{TerPogossian1976EditorialCO,
  title={Editorial: Changing of the guard.},
  author={Michel M. Ter-Pogossian and R H Troupin},
  journal={AJR. American journal of roentgenology},
  year={1976},
  volume={126 1},
  pages={188-9}
}