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Washio M, Kobashi G, Okamoto K, Sasaki S, Yokoyama T, Miyake Y, Sakamoto N, Ohta K, Inaba Y, Tanaka H; Japan Collaborative Epidemiological Study Group for Evaluation of Ossification of the Posterior Longitudinal Ligament of thr Spine Risk.Washio M, et al. Among authors: ohta k.J Epidemiol. 2004 Sep;14(5):168-73. doi: 10.2188/jea.14.168.J Epidemiol. 2004.PMID: 15478672Free PMC article.
Kobashi G, Washio M, Okamoto K, Sasaki S, Yokoyama T, Miyake Y, Sakamoto N, Ohta K, Inaba Y, Tanaka H; Japan Collaborative Epidemiological Study Group for Evaluation of Ossification of the Posterior Longitudinal Ligament of the Spine Risk.Kobashi G, et al. Among authors: ohta k.Spine (Phila Pa 1976). 2004 May 1;29(9):1006-10. doi: 10.1097/00007632-200405010-00011.Spine (Phila Pa 1976). 2004.PMID: 15105673
Okamoto K, Kobashi G, Washio M, Sasaki S, Yokoyama T, Miyake Y, Sakamoto N, Ohta K, Inaba Y, Tanaka H; Japan Collaborative Epidemiological Study Group for Evaluation of Ossification of the Posterior Longitudinal Ligament of the Spine (OPLL) Risk.Okamoto K, et al. Among authors: ohta k.J Bone Miner Metab. 2004;22(6):612-7. doi: 10.1007/s00774-004-0531-1.J Bone Miner Metab. 2004.PMID: 15490273
Kobashi G, Ohta K, Washio M, Okamoto K, Sasaki S, Yokoyama T, Miyake Y, Sakamoto N, Hata A, Tamashiro H, Inaba Y, Tanaka H; Japan Collaborative Epidemiological Study Group for Evaluation of Ossification of the Posterior Longitudinal Ligament of the Spine Risk.Kobashi G, et al. Among authors: ohta k.Spine (Phila Pa 1976). 2008 Jul 15;33(16):E553-8. doi: 10.1097/BRS.0b013e31817e9de2.Spine (Phila Pa 1976). 2008.PMID: 18628697Clinical Trial.