Liu, Qi Estrogen Deficiency Exacerbates Intervertebral Disc Degeneration Induced by Spinal Instability in Rats. [electronic resource] - Spine May 2019 - E510-E519 p. digital Publication Type: Journal Article ISSN: 1528-1159 Standard No.: 10.1097/BRS.0000000000002904 doi Subjects--Topical Terms: AnimalsDisease Models, AnimalEstrogens--deficiencyFemaleIntervertebral Disc--chemistryIntervertebral Disc DegenerationOsteoporosisOvariectomyRatsRats, Sprague-Dawley