Spine
-
Retrospective case-control study. ⋯ 3.
-
Prospective study. ⋯ 2.
-
Retrospective review. ⋯ 5.
-
Retrospective. ⋯ 4.
-
Observational Study
Design and Validation of a Spinal Surgical Navigation System Based on Spatial Augmented Reality.
Prospective observational study. ⋯ N/A.