28190
Halo nevi are estimated to be present in approximately 1 % of the general population , and are found to be more prevalent in people with vitiligo , malignant melanoma , All races and sexes are equally susceptible to this disease , although a familial tendency has been reported .
 vitiligo, malignant melanoma
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 vitiligo, malignant melanoma