Spine
-
This is a cross-sectional study. ⋯ 3.
-
Retrospective cohort study. ⋯ 3.
-
Animal experimental study. ⋯ N/A.
This is a cross-sectional study. ⋯ 3.
Retrospective cohort study. ⋯ 3.
Animal experimental study. ⋯ N/A.