Papillomavirus invades esophagus, incidence seems to be increasing.

@article{Goldsmith1984PapillomavirusIE,
  title={Papillomavirus invades esophagus, incidence seems to be increasing.},
  author={Marsha F Goldsmith},
  journal={JAMA},
  year={1984},
  volume={251 17},
  pages={2185-7}
}