1995年 Histochemical and immunohistochemical study on the skin of patients with ossification of the posterior longitudinal ligament in the cervical spine Imamura T, Sakou T, Matsunaga S, Taketomi E, Ishido Y, Yoshida H. In Vivo. 1995 May 1;9(3):167-171 PMID: 8562875 EuropePMC