Geneva, Oct. 15 -- International Clinical Trials Registry received information related to the study (ChiCTR2600134040) titled 'Multicenter study on the epidemiological investigation of cervical ossification of the posterior longitudinal ligament in different regions of China' on Oct. 10.
Study Type: Observational study
Study Design:
Sequential
Primary Sponsor: Peking University Third Hospital
Condition:
Ossification of the posterior longitudinal ligament of the cervical spine
Intervention:
localized type:N/A
segmental type:N/A
continuous type:N/A
Recruitment Status: Not Recruiting
Phase: Retrospective study
Date of First Enrollment: 2022-01-19
Target Sample Size: localized type:500;segmental type:800;continuous type:300;mix...