Diagnosis of appendicitis by barium enema.

@article{Lukoff1978DiagnosisOA,
  title={Diagnosis of appendicitis by barium enema.},
  author={J Y Lukoff and Evan Charney and Kenneth B. Roberts},
  journal={The Journal of pediatrics},
  year={1978},
  volume={93 4},
  pages={
          724-5
        }
}