Pregnancy and idiopathic osteoporosis.
D000293:Adolescent; D000328:Adult; D004813:Epidemiology; D005260:Female; D006801:Humans; D008875:Middle Aged; D010024:Osteoporosis / Q000209:etiology*; D011247:Pregnancy; D011248:Pregnancy Complications; D012189:Retrospective Studies