title: [Epidemiology of osteoporosis and its significance as a risk factor for fractures].
authors.forename: Saeko
authors.initials: S
authors.lastname: Fujiwara
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015519:Bone Density; D005260:Female; D050723:Fractures, Bone / Q000209:etiology; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008875:Middle Aged; D010024:Osteoporosis / Q000453:epidemiology*; D012307:Risk Factors