1. Ethnic skin disorders overview
2. High Incidence and Regression Rates of Solar Keratoses in a Queensland Community
3. 4M-LT Johnson . Skin conditions and related need for medical care among persons 1 - 74 years. United States. 1971 - 1974. Vital Health Statistics 1978 ;Series 11, Data from the National Health Survey; no 212, DHEW Publication no. (PHS) 79 - 1660. Hyattsville, ML: US Department of Health, Education and Welfare .
4. Epidemiology of actinic keratoses and squamous cell carcinoma