All examples of definitions and descriptions referred to here are taken from the Handbook of Dermoscopy by Melvehy, Puig, Braun, Marghoob, and Kopf, and published by Taylor & Francis of Boca Raton, Florida, USA, in 2006.

This work and the creation of the new algorithmic method emerged through continuous inspiring discussions with Dr. Elisabeth Riedl and Dr. A. Bernard Ackerman in New York City, Venice, Pavia, and Graz.