sharquie, Khalifa, Husam Salman, and Adil Noaimi. 2015. “Treatment of Perniosis With Oral Tadalafil, Pentoxifylline or Prednisolone A Therapeutic Comparative Study”. Journal of the Faculty of Medicine Baghdad 57 (3), 210-13. https://doi.org/10.32007/med.1936/jfacmedbagdad.v57i3.7.