Urticaria pigmentosa: a clinical, hematopathologic and serologic study of 30 adults. Posted byadmin 27. July 1998 Topar G, Staudacher C, Geisen F, Gabl C, Fend F, Herold M, Greil R, Fritsch P, Sepp N. http://www.ncbi.nlm.nih.gov/pubmed/9495199