1[1]Brunsting LA, Goeckerman WH. Pyoderma gangrenosum clinical and experimental observation in five cases occurring in adults. Arch Dermatol, 1930,22: 655
2[2]Vignon-Pennamen MD, Wallach D. Cutaneous manifestation of neutrophilic disease a study of seven cases. Dermatologica, 1991,183:255
3[3]Powell FC, Daniel SP, Perry HO, et al.Pyoderma gangrenosum classification and management. J Am Acad Dermatol, 1996,34:395
