Spine
-
Cohort study. ⋯ 3.
-
Retrospective study. ⋯ 4.
-
Observational Study
Opioid Prescribing Patterns for Low Back Pain Among Commercially-Insured Children.
: Level of Evidence: 3.
Cohort study. ⋯ 3.
Retrospective study. ⋯ 4.
: Level of Evidence: 3.