Spine
-
Longitudinal follow-up study. ⋯ 3.
-
Biomechanical, cadaveric study. ⋯ N/A.
-
A prospective questionnaire. ⋯ 3.
-
Laboratory/animal-based proof of principle study. ⋯ N/A.
-
Clinical research and animal experiment. ⋯ N/A.