Pityriasis rubra pilaris. Prolonged treatment with methotrexate.

@article{Knowles1970PityriasisRP,
  title={Pityriasis rubra pilaris. Prolonged treatment with methotrexate.},
  author={W R Knowles and M E Chernosky},
  journal={Archives of dermatology},
  year={1970},
  volume={102 6},
  pages={603-12}
}