Nishida, H., Daa, T., Kashima, K., Arakane, M., Shimada, H., Goto, M., Kai, Y., Hatano, Y., Okamoto, O., & Yokoyama, S. (2013). Cutaneous horn malignant melanoma. Dermatology Reports, 5(1), e3. https://doi.org/10.4081/dr.2013.e3