The prevalence of psoriasis in the world.

@article{Raychaudhuri2001ThePO,
  title={The prevalence of psoriasis in the world.},
  author={Smriti Kundu Raychaudhuri and Eugene M. Farber},
  journal={Journal of the European Academy of Dermatology and Venereology : JEADV},
  year={2001},
  volume={15 1},
  pages={16-7}
}