1. WebMD.
https://www.webmd.com/skin-problems-and-treatments/picture-of-the-skin#1
2. verywellhealth.
https://www.verywellhealth.com/what-is-skin-cancer-3010808
3. Lacy, K., Wisam, A.: Skin cancer. Medicine 41(7), 402–405 (2013).
https://doi.org/10.1016/j.mpmed.2013.04.00
4. Mayoclinic.
https://www.pharmacytimes.com/perspectives/management-of-melanoma/burden-and-disease-characteristics-of-melanoma
5. Skin Cancer Foundation.
https://www.skincancer.org/skin-cancer-information/skin-cancerfacts