Environmental exposure to UV-B radiation.
D000531:Altitude; D002280:Basal Cell Carcinoma / Q000209:etiology / Q000473:pathology; D004307:Dose-Response Relationship, Radiation; D004781:Environmental Exposure; D005843:Geography; D006801:Humans; D009381:Neoplasms, Radiation-Induced / Q000209:etiology; D012621:Seasons; D012878:Skin Neoplasms / Q000209:etiology / Q000473:pathology; D013472:Sunlight; D014466:Ultraviolet Rays / Q000009:adverse effects; D014887:Weather