Posterior paravertebral ossifficationcaussing cervial myelopathy;Areport of eighteencases. Yutaka O,et al. Journal of Bone and Joint Surgery British Volume . 1967
Posterior paravertebral ossifficationcaussing cervial myelopathy;Areport of eighteencases. Yutaka O,et al. Journal of Bone and Joint Surgery British Volume . 1967