title: Letter: Atmospheric ozone and femoral fractures.
mesh_terms: D000368:Aged; D002762:Cholecalciferol / Q000096:biosynthesis; D005265:Femoral Neck Fractures / Q000209:etiology*; D006801:Humans; D010018:Osteomalacia / Q000150:complications / Q000209:etiology; D010126:Ozone; D014466:Ultraviolet Rays; D014808:Vitamin D Deficiency / Q000150:complications
chemical_list: D002762:Cholecalciferol; D010126:Ozone