1. Chuang T-Y, Popescu A, Su D, Chute C G: Basal cell carcinoma, J Am Acad Dermatol, 22: 413-417, 1990
2. Scotto J, Fears TR, Fraumeni JF: Incidence of nonmelanoma skin cancer in the United States, Us. Dept. of Health and Human Services, Public Health Survice National Cancer Institute, NIH Publication No.83-2433, 1983
3. Gallagher RP, Ma B, McLean DI, Yang CP, Vincent Ho, Carruthers JA, Warshawski LM: Trends in basal cell carcinoma, squamous cell carcinoma, and melanoma of the skin from 1973 through 1987, JAm Acad Dermatol, 23: 413-421, 1990
4. Miaji T: Skin cancers in Japan: a nation wide 5-year survey, NCI Monogr., 10: 55-70, 1963