title: Sunscreen effectiveness: theoretical and practical considerations.
mesh_terms: D006801:Humans; D012867:Skin / Q000528:radiation effects*; D012878:Skin Neoplasms / Q000517:prevention & control*; D013473:Sunscreening Agents / Q000009:adverse effects / Q000627:therapeutic use*; D014466:Ultraviolet Rays / Q000009:adverse effects
chemical_list: D013473:Sunscreening Agents